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<title>Volumen 118 | Número 01</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77051</link>
<description/>
<pubDate>Mon, 02 Nov 2026 12:49:24 GMT</pubDate>
<dc:date>2026-11-02T12:49:24Z</dc:date>
<item>
<title>Parámetros morfológicos y fisiológicos de plantas de pimiento inoculadas con Funneliformis mosseae en condiciones de hidroponía y con altas concentraciones de cobre</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77224</link>
<description>Articulo
Morphological and physiological parameters of pepper plants inoculated with funneliformis mosseae under hydroponic conditions and with high copper concentrations
Revista de la Facultad de Agronomía; vol. 118, no. 1
La incorporación de metales pesados al medio como modo de contaminación por el uso de fertilizantes y plaguicidas es una de las problemáticas que más preocupan a las organizaciones vinculadas al monitoreo del ambiente. El cobre es un micronutriente esencial para el crecimiento vegetal, pero en elevadas concentraciones es tóxico. Las micorrizas arbusculares, participan activamente en el metabolismo de los metales pesados, aumentando la tolerancia de las plantas que crecen en sitios contaminados. Se evaluaron las respuestas morfológicas y fisiológicas de plantas de pimiento inoculadas con el hongo micorrícico arbuscular Funneliformis mosseae en concentraciones crecientes de cobre en un cultivo hidropónico. Se realizaron mediciones morfológicas (peso seco, área foliar), fisiológicas (conductancia y resistencia estomática, índice de verdor, temperatura de hoja, conductividad relativa de membranas celulares) y bioquímicas (patrón proteico, contenido de malondialdehído). Las plantas inoculadas con el hongo micorrícico arbuscular toleraron una concentración mayor de cobre que las no inoculadas y esta concentración varió según el parámetro analizado. En general, en las plantas micorrizadas se observó un aumento del umbral de tolerancia al cobre.; Industrialization and agricultural activity, through the use of fertilizers and pesticides, have caused severe environmental pollution. The heavy metals incorporation is one of the problems that most concern organizations linked to environmental monitoring. Copper is an essential micronutrient for plant growth but in high concentrations it is toxic. Arbuscular mycorrhizae actively participate in the heavy metals metabolism, increasing the tolerance of plants growing in contaminated sites. The morphological and physiological responses of pepper plants inoculated with the arbuscular mycorrhizal fungus Funneliformis mosseae in increasing concentrations of copper in a hydroponic culture were evaluated. Morphological measurements (dry weight, foliar area), physiological measurements (stomatal conductance and resistance, greenness index, leaf temperature, relative conductivity of cell membranes) and biochemical (protein pattern, content of malondialdehyde) were made. The growth of the non-inoculated or inoculated pepper plants showed a decrease with the increase of the copper concentration in the medium. The plants inoculated with the arbuscular mycorrhizal fungus could withstand a higher concentration of copper than the non-inoculated ones and this concentration varied according to the parameter analyzed. In general, in mycorrhized plants an increase in the tolerance threshold to copper was observed.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77224</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>La incorporación de metales pesados al medio como modo de contaminación por el uso de fertilizantes y plaguicidas es una de las problemáticas que más preocupan a las organizaciones vinculadas al monitoreo del ambiente. El cobre es un micronutriente esencial para el crecimiento vegetal, pero en elevadas concentraciones es tóxico. Las micorrizas arbusculares, participan activamente en el metabolismo de los metales pesados, aumentando la tolerancia de las plantas que crecen en sitios contaminados. Se evaluaron las respuestas morfológicas y fisiológicas de plantas de pimiento inoculadas con el hongo micorrícico arbuscular Funneliformis mosseae en concentraciones crecientes de cobre en un cultivo hidropónico. Se realizaron mediciones morfológicas (peso seco, área foliar), fisiológicas (conductancia y resistencia estomática, índice de verdor, temperatura de hoja, conductividad relativa de membranas celulares) y bioquímicas (patrón proteico, contenido de malondialdehído). Las plantas inoculadas con el hongo micorrícico arbuscular toleraron una concentración mayor de cobre que las no inoculadas y esta concentración varió según el parámetro analizado. En general, en las plantas micorrizadas se observó un aumento del umbral de tolerancia al cobre.

Industrialization and agricultural activity, through the use of fertilizers and pesticides, have caused severe environmental pollution. The heavy metals incorporation is one of the problems that most concern organizations linked to environmental monitoring. Copper is an essential micronutrient for plant growth but in high concentrations it is toxic. Arbuscular mycorrhizae actively participate in the heavy metals metabolism, increasing the tolerance of plants growing in contaminated sites. The morphological and physiological responses of pepper plants inoculated with the arbuscular mycorrhizal fungus Funneliformis mosseae in increasing concentrations of copper in a hydroponic culture were evaluated. Morphological measurements (dry weight, foliar area), physiological measurements (stomatal conductance and resistance, greenness index, leaf temperature, relative conductivity of cell membranes) and biochemical (protein pattern, content of malondialdehyde) were made. The growth of the non-inoculated or inoculated pepper plants showed a decrease with the increase of the copper concentration in the medium. The plants inoculated with the arbuscular mycorrhizal fungus could withstand a higher concentration of copper than the non-inoculated ones and this concentration varied according to the parameter analyzed. In general, in mycorrhized plants an increase in the tolerance threshold to copper was observed.</dc:description>
</item>
<item>
<title>Aporte nutricional del forraje verde hidropónico en la alimentación de cabras cruza criollas x Nubian</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77221</link>
<description>Articulo
Aporte nutricional del Forraje Verde Hidropónico en la alimentación de cabras cruza criollas x Nubian
Revista de la Facultad de Agronomía; vol. 118, no. 1
El objetivo de este trabajo fue evaluar la incorporación de Forraje Verde Hidropónico (FVH) en dietas para caprinos. Se utilizaron cuatro cabras cruza (criolla x Nubian) en un diseño experimental Cross over con cuatro repeticiones. El FVH utilizado fue Avena sativa. La dietas suministradas fueron: heno de CN 100% (D0) y heno de CN + 1,2 Kg FVH/cabra/día (D1). El heno de CN fue suministrado ad-libitum. Se realizaron dos experimento: I) determinación de consumo de materia seca total (CTMS), consumo de heno CN (CMSHCN), consumo de FVH y digestibilidad total aparente in vivo de la materia seca consumida. II) determinación del pH ruminal y la degradabilidad ruminal in situ del FVH y del heno de CN. El CTMS de D1 fue mayor (p&lt; 0,05) que D0 y se verificó un aumento lineal (p&lt; 0,05) del consumo de FDN, PB y EM. El CMSHCN no registró diferencias (p&gt; 0,05) entre ambos tratamientos. La digestibilidad total de la dieta consumida aumentó linealmente (p&lt; 0,05) en D1. La degradabilidad ruminal in situ de la MS del FVH para las 48 h de incubación ruminal no verificó diferencias (p&gt; 0,05) entre la parte aérea y radicular. La degradabilidad ruminal in situ del heno de CN fue mayor (p&lt;0,05) en la dieta D1. El pH ruminal no verificó diferencias (p&gt; 0,05) entre las dietas probadas. El FVH es una alternativa válida en la alimentación de caprinos, actuando como mejorador del consumo, la degradabilidad ruminal, digestibilidad total y valor nutritivo de reservas forrajeras de baja calidad.; The objective of this work was to evaluate the incorporation of Hydroponic Green Forage (FVH) in diets for goats.&#13;
Four crossed goats (criolla x Nubian) were used in an experimental cross design (croos over) with four repetitions. The FVH used was Avena sativa. The diets supplied were: 100% CN hay (D0) and CN hay + 1.2 Kg FVH / goat / day (D1). In all treatments, CN hay was delivered ad-libitum. Two experiments were carried out: I) determination of total dry matter consumption (CTMS), CN hay consumption (CMSHCN), FVH consumption and apparent total digestibility in vivo of the dry matter consumed. II) Determination of ruminal pH and in situ ruminal degradability of FVH and CN hay. The CTMS of D1 was higher (p &amp;lt;0.05) than D0 and there was a linear increase (p &amp;lt;0.05) in the consumption of NDF, PB and MS. The CMSHCN did not register differences (p&amp;gt; 0.05) between both treatments. The treatment that included FVH, increased linearly (p &amp;lt;0.05) the total digestibility of the diet consumed. The in situ ruminal degradability of the HF of the FVH for the 48 h of ruminal incubation did not verify differences (p&amp;gt; 0.05) between the aerial part and the radicular part. The in situ degradability of CN hay for 48 h of its rumen incubation was higher (p &amp;lt;0.05) in the D1 diet. The average ruminal pH of the day, the area under the pH 6 threshold curve and the hours with pH below the threshold, did not verify differences (p&amp;gt; 0.05) between the diets tested. In conclusion, the FVH is a valid alternative in the feeding of goats, acting as an improvement in consumption, ruminal degradability, total digestibility and nutritional value of forage reserves of low quality.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77221</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>El objetivo de este trabajo fue evaluar la incorporación de Forraje Verde Hidropónico (FVH) en dietas para caprinos. Se utilizaron cuatro cabras cruza (criolla x Nubian) en un diseño experimental Cross over con cuatro repeticiones. El FVH utilizado fue Avena sativa. La dietas suministradas fueron: heno de CN 100% (D0) y heno de CN + 1,2 Kg FVH/cabra/día (D1). El heno de CN fue suministrado ad-libitum. Se realizaron dos experimento: I) determinación de consumo de materia seca total (CTMS), consumo de heno CN (CMSHCN), consumo de FVH y digestibilidad total aparente in vivo de la materia seca consumida. II) determinación del pH ruminal y la degradabilidad ruminal in situ del FVH y del heno de CN. El CTMS de D1 fue mayor (p&lt; 0,05) que D0 y se verificó un aumento lineal (p&lt; 0,05) del consumo de FDN, PB y EM. El CMSHCN no registró diferencias (p&gt; 0,05) entre ambos tratamientos. La digestibilidad total de la dieta consumida aumentó linealmente (p&lt; 0,05) en D1. La degradabilidad ruminal in situ de la MS del FVH para las 48 h de incubación ruminal no verificó diferencias (p&gt; 0,05) entre la parte aérea y radicular. La degradabilidad ruminal in situ del heno de CN fue mayor (p&lt;0,05) en la dieta D1. El pH ruminal no verificó diferencias (p&gt; 0,05) entre las dietas probadas. El FVH es una alternativa válida en la alimentación de caprinos, actuando como mejorador del consumo, la degradabilidad ruminal, digestibilidad total y valor nutritivo de reservas forrajeras de baja calidad.

The objective of this work was to evaluate the incorporation of Hydroponic Green Forage (FVH) in diets for goats.&#13;
Four crossed goats (criolla x Nubian) were used in an experimental cross design (croos over) with four repetitions. The FVH used was Avena sativa. The diets supplied were: 100% CN hay (D0) and CN hay + 1.2 Kg FVH / goat / day (D1). In all treatments, CN hay was delivered ad-libitum. Two experiments were carried out: I) determination of total dry matter consumption (CTMS), CN hay consumption (CMSHCN), FVH consumption and apparent total digestibility in vivo of the dry matter consumed. II) Determination of ruminal pH and in situ ruminal degradability of FVH and CN hay. The CTMS of D1 was higher (p &amp;lt;0.05) than D0 and there was a linear increase (p &amp;lt;0.05) in the consumption of NDF, PB and MS. The CMSHCN did not register differences (p&amp;gt; 0.05) between both treatments. The treatment that included FVH, increased linearly (p &amp;lt;0.05) the total digestibility of the diet consumed. The in situ ruminal degradability of the HF of the FVH for the 48 h of ruminal incubation did not verify differences (p&amp;gt; 0.05) between the aerial part and the radicular part. The in situ degradability of CN hay for 48 h of its rumen incubation was higher (p &amp;lt;0.05) in the D1 diet. The average ruminal pH of the day, the area under the pH 6 threshold curve and the hours with pH below the threshold, did not verify differences (p&amp;gt; 0.05) between the diets tested. In conclusion, the FVH is a valid alternative in the feeding of goats, acting as an improvement in consumption, ruminal degradability, total digestibility and nutritional value of forage reserves of low quality.</dc:description>
</item>
<item>
<title>Metodología operativa para la obtención de datos históricos de precipitación a partir de la misión satelital Tropical Rainfall Measuring Mission: validación de resultados con datos de pluviómetros</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77219</link>
<description>Articulo
Operational methodology to obtain historical rainfall data from the satellite Tropical Rainfall Measuring Mission. Validation of results with rain gauge data
Revista de la Facultad de Agronomía; vol. 118, no. 1
La información de precipitación es crítica para la comprensión del equilibrio hidrológico a escala global. La lluvia, junto con otras variables ambientales tales como evapotranspiración, temperatura, humedad relativa, entre otras, representa un factor de interés para la producción agrícola. Debido a esto, surge la necesidad de llevar adelante estudios que posibiliten comprender mejor la variabilidad espacial y temporal de las mismas. En este trabajo se presenta una metodología que permite automatizar la descarga de series temporales de datos de precipitación de la Misión de Medición de la Lluvia Tropical (Tropical Rainfall Measuring Mission (TRMM)) desde la plataforma Google Earth Engine (GEE) y validar los datos obtenidos con una serie de datos históricos de una estación meteorológica. Con este fin se desarrolló un sistema bajo la plataforma GEE para la generación y descarga de datos TRMM. Como caso de estudio se fijó la cuenca del Arroyo Las Conchas de la Provincia de Entre Ríos, Argentina. Para la validación de los resultados, se generó un set de datos con la información de precipitaciones desde el 1 de enero del 2000 al 31 de diciembre del 2015, medida por pluviómetros, para el área de influencia de la estación meteorológica de la Estación Experimental Agropecuaria del INTA de Oro Verde, departamento de Paraná, provincia de Entre Ríos, Argentina. Los resultados obtenidos mediante el proceso de evaluación muestran que existe una estrecha relación entre ambas fuentes de información. La metodología propuesta permitirá generar sets de datos históricos de precipitación para estudiar el régimen hídrico en regiones de difícil acceso o en cuencas extensas y poco pobladas.; Precipitation information is critical for understanding the hydrological equilibrium on a global scale. Rain, with other conditions, represents a factor of interest for agricultural production. Therefore, the need of carrying out studies that make possible to understand spatial and temporal variability of rain becomes evident. This paper presents a methodology that allows the automatic downloading of time series of precipitation data from the Tropical Rainfall Measurement Mission (TRMM) from the Google Earth Engine (GEE) platform and validate it with a series of meteorological data. The system was developed under the GEE platform for downloading the TRMM data. As a case of study, the Arroyo Las Conchas basin in the Entre Ríos province, in Argentina was established.&#13;
To validate the results, a set of data was generated with rainfall information in 16 year period, by measuring the rain gauges for the area of influence at the meteorological station in the Instituto Nacional de Tecnología Agropecuaria (INTA) Station at Oro Verde, Paraná, Entre Ríos, Argentina. The results through the evaluation process show a close relationship between both sources of information. The proposed methodology will allow generating sets of historical rainfall data to study the hydrological regime of the Las Conchas Stream basin.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77219</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>La información de precipitación es crítica para la comprensión del equilibrio hidrológico a escala global. La lluvia, junto con otras variables ambientales tales como evapotranspiración, temperatura, humedad relativa, entre otras, representa un factor de interés para la producción agrícola. Debido a esto, surge la necesidad de llevar adelante estudios que posibiliten comprender mejor la variabilidad espacial y temporal de las mismas. En este trabajo se presenta una metodología que permite automatizar la descarga de series temporales de datos de precipitación de la Misión de Medición de la Lluvia Tropical (Tropical Rainfall Measuring Mission (TRMM)) desde la plataforma Google Earth Engine (GEE) y validar los datos obtenidos con una serie de datos históricos de una estación meteorológica. Con este fin se desarrolló un sistema bajo la plataforma GEE para la generación y descarga de datos TRMM. Como caso de estudio se fijó la cuenca del Arroyo Las Conchas de la Provincia de Entre Ríos, Argentina. Para la validación de los resultados, se generó un set de datos con la información de precipitaciones desde el 1 de enero del 2000 al 31 de diciembre del 2015, medida por pluviómetros, para el área de influencia de la estación meteorológica de la Estación Experimental Agropecuaria del INTA de Oro Verde, departamento de Paraná, provincia de Entre Ríos, Argentina. Los resultados obtenidos mediante el proceso de evaluación muestran que existe una estrecha relación entre ambas fuentes de información. La metodología propuesta permitirá generar sets de datos históricos de precipitación para estudiar el régimen hídrico en regiones de difícil acceso o en cuencas extensas y poco pobladas.

Precipitation information is critical for understanding the hydrological equilibrium on a global scale. Rain, with other conditions, represents a factor of interest for agricultural production. Therefore, the need of carrying out studies that make possible to understand spatial and temporal variability of rain becomes evident. This paper presents a methodology that allows the automatic downloading of time series of precipitation data from the Tropical Rainfall Measurement Mission (TRMM) from the Google Earth Engine (GEE) platform and validate it with a series of meteorological data. The system was developed under the GEE platform for downloading the TRMM data. As a case of study, the Arroyo Las Conchas basin in the Entre Ríos province, in Argentina was established.&#13;
To validate the results, a set of data was generated with rainfall information in 16 year period, by measuring the rain gauges for the area of influence at the meteorological station in the Instituto Nacional de Tecnología Agropecuaria (INTA) Station at Oro Verde, Paraná, Entre Ríos, Argentina. The results through the evaluation process show a close relationship between both sources of information. The proposed methodology will allow generating sets of historical rainfall data to study the hydrological regime of the Las Conchas Stream basin.</dc:description>
</item>
<item>
<title>Mercados agroalimentares do Vale do Jaguari (RS): o caso das frutas, legumes e verduras (flv)</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77218</link>
<description>Articulo
Agrifood markets of the Vale do Jaguari (RS): the case of fruits, vegetables and viridity (fvv)
Revista de la Facultad de Agronomía; vol. 118, no. 1
A abertura comercial intensificada a partir da década de 1990, condicionou a internacionalização dos mercados.&#13;
Por outro lado, as políticas públicas de compras institucionais de alimentos crescem, sobretudo após 2000, e juntamente com as novas demandas vem reconfigurando territórios e colocando em evidência teórico-prática os mercados. O artigo analisa os mercados de hortigranjeiros acessados por agricultores da região do Vale do Jaguari (RS), bem como as especificidades dos atores envolvidos, das unidades de produção e dos canais de comercialização presentes. Metodologicamente, utilizou-se o enfoque qualitativo e quantitativo, com aplicação de questionários junto a 179 fruticultores e 135 olericultores, além da análise de dados secundários. Dentre alguns resultados encontrados, destaca-se o envelhecimento da população rural, sendo a média de idade dos responsáveis pela produção de FLV de 52 anos. Soma-se a isso, o esvaziamento das propriedades, sendo que essas possuíam, em média, 3,2 residentes por propriedade. Quanto às especificidades dos mercados acessados pelos agricultores, constatou-se que as feiras são os principais acessados. Por fim, conclui-se que mesmo diante da competição dos atuais mercados agroalimentares, os mercados de proximidade predominam frente aos demais no Vale do Jaguari, seguido dos mercados locais e territoriais para as hortaliças e dos convencionais para as frutas.; The commercial opening, intensified after the 1990s, conditioned the internationalization of the markets. On the other hand, public policies for institutional food purchases have grown mainly after 2000, and toguether with the new demands, comes reconfiguring territories and placing theoretical and practical evidence on markets. The article analyzes the horticultural markets accessed by farmers in the Jaguari Valley region, as well as the specificities of the actors involved, the production units and the commercialization channels present.&#13;
Methodologically, the qualitative and quantitative approach was applied, with questionnaires applied to 179 fruit growers, 135 farmers, in addition to the analysis of secondary data. Among the results found, the aging of the rural population stands out, being the average age of those responsible for the production of FLV of 52 years. In addition to this, the emptying of properties, which had, on average, 3.2 residents per property. As for the specific features of the markets accessed by farmers, it has been found that fairs are the main markets accessed by them, both for fruits and for vegetables. Finally, it is concluded that even in the face of the competition of the current agrifood markets, the proximity markets predominate in comparison with the others in the Jaguari Valley, followed by the local and territorial markets for vegetables and the conventional ones for fruits.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77218</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>A abertura comercial intensificada a partir da década de 1990, condicionou a internacionalização dos mercados.&#13;
Por outro lado, as políticas públicas de compras institucionais de alimentos crescem, sobretudo após 2000, e juntamente com as novas demandas vem reconfigurando territórios e colocando em evidência teórico-prática os mercados. O artigo analisa os mercados de hortigranjeiros acessados por agricultores da região do Vale do Jaguari (RS), bem como as especificidades dos atores envolvidos, das unidades de produção e dos canais de comercialização presentes. Metodologicamente, utilizou-se o enfoque qualitativo e quantitativo, com aplicação de questionários junto a 179 fruticultores e 135 olericultores, além da análise de dados secundários. Dentre alguns resultados encontrados, destaca-se o envelhecimento da população rural, sendo a média de idade dos responsáveis pela produção de FLV de 52 anos. Soma-se a isso, o esvaziamento das propriedades, sendo que essas possuíam, em média, 3,2 residentes por propriedade. Quanto às especificidades dos mercados acessados pelos agricultores, constatou-se que as feiras são os principais acessados. Por fim, conclui-se que mesmo diante da competição dos atuais mercados agroalimentares, os mercados de proximidade predominam frente aos demais no Vale do Jaguari, seguido dos mercados locais e territoriais para as hortaliças e dos convencionais para as frutas.

The commercial opening, intensified after the 1990s, conditioned the internationalization of the markets. On the other hand, public policies for institutional food purchases have grown mainly after 2000, and toguether with the new demands, comes reconfiguring territories and placing theoretical and practical evidence on markets. The article analyzes the horticultural markets accessed by farmers in the Jaguari Valley region, as well as the specificities of the actors involved, the production units and the commercialization channels present.&#13;
Methodologically, the qualitative and quantitative approach was applied, with questionnaires applied to 179 fruit growers, 135 farmers, in addition to the analysis of secondary data. Among the results found, the aging of the rural population stands out, being the average age of those responsible for the production of FLV of 52 years. In addition to this, the emptying of properties, which had, on average, 3.2 residents per property. As for the specific features of the markets accessed by farmers, it has been found that fairs are the main markets accessed by them, both for fruits and for vegetables. Finally, it is concluded that even in the face of the competition of the current agrifood markets, the proximity markets predominate in comparison with the others in the Jaguari Valley, followed by the local and territorial markets for vegetables and the conventional ones for fruits.</dc:description>
</item>
<item>
<title>Plantas usadas en medicina popular en el sector sur de los humedales rioplatenses de la Provincia de Buenos Aires, Argentina</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77214</link>
<description>Articulo
Plants used in popular medicine in the southern sector of the Rioplatense wetlands of the Province of Buenos Aires, Argentina
Revista de la Facultad de Agronomía; vol. 118, no. 1
Los humedales rioplatenses bonaerenses se extienden desde la localidad de Punta Lara hasta la localidad de Magdalena. Esta zona ha comenzado a degradarse desde finales del siglo XIX por la acción antrópica. El incumplimiento de las leyes de protección y conservación ambiental bonaerenses 11.723 y 12.756, ha acelerado la retracción areal de los humedales y la pérdida de su biodiversidad. La ley 12.756, declara Paisaje Protegido de Interés Provincial para el desarrollo ecoturístico al área del norte y centro de los humedales rioplatenses comprendida entre la Isla Santiago y el balneario Bagliardi, sin incluir su extremo sur que se extiende desde el balneario La Balandra hasta la zona ribereña de las localidades de Atalaya y Magdalena. Existiendo estudios previos sobre el valor alimenticio, condimentario y medicinal de numerosas especies vegetales presentes en el norte y centro de estos humedales, realizamos un inventario informativo de las especies vegetales medicinales utilizadas por los habitantes del extremo sur de esta ribera, comprendido entre las localidades de Atalaya y Magdalena, con el fin de revalorizar este recurso fitoterapéutico, como un nuevo elemento a ser tenido en cuenta por el Poder Legislativo y Judicial de la Provincia de Buenos Aires, para la protección y conservación de los humedales en toda su extensión. El inventario incluye: nombre científico, nombre vulgar, familia, hábito, origen geográfico y estatus, uso medicinal, parte del vegetal utilizada para la elaboración del producto fitoterapéutico y forma de preparación y de administración del producto medicinal.; The Rioplatense wetlands of the province of Buenos Aires extend from Punta Lara locality to the Magdalena locality. This zone has begun to degrade since the late nineteenth century by anthropic action. The breach of the environmental protection and conservation laws of the province of Buenos Aires 11.723 y 12.756, has accelerated the retraction of these wetlands and the loss of their biodiversity. Law 12.756, declares Protected Landscape of Provincial Interest for ecotourism development to the area of the north and center of the Rioplaten wetlands between Santiago Island and the Bagliardi spa, not including its southern end that extends from La Balandra spa to the river area of the localities of Atalaya and Magdalena. Existing previous studies on the nutritional value, condimentary and medicinal of numerous plant species present in the north and center of these wetlands, we have made an informative inventory of the medicinal plant species used by the habitants of the southern sector of the wetlands with the objective to revalue this phytotherapeutic resource in all her extension, as a new biology element to be taken into account by the Legislative and Judicial authorities of the Province of Buenos Aires, for the protection and conservation of the wetlands in all its extension. The inventory includes: scientific name, common name, family, habit, geographical origin and status, medicinal use, part of the vegetable used for the preparation of the phytotherapeutic product and form of preparation and administration of the medicinal product.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77214</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>Los humedales rioplatenses bonaerenses se extienden desde la localidad de Punta Lara hasta la localidad de Magdalena. Esta zona ha comenzado a degradarse desde finales del siglo XIX por la acción antrópica. El incumplimiento de las leyes de protección y conservación ambiental bonaerenses 11.723 y 12.756, ha acelerado la retracción areal de los humedales y la pérdida de su biodiversidad. La ley 12.756, declara Paisaje Protegido de Interés Provincial para el desarrollo ecoturístico al área del norte y centro de los humedales rioplatenses comprendida entre la Isla Santiago y el balneario Bagliardi, sin incluir su extremo sur que se extiende desde el balneario La Balandra hasta la zona ribereña de las localidades de Atalaya y Magdalena. Existiendo estudios previos sobre el valor alimenticio, condimentario y medicinal de numerosas especies vegetales presentes en el norte y centro de estos humedales, realizamos un inventario informativo de las especies vegetales medicinales utilizadas por los habitantes del extremo sur de esta ribera, comprendido entre las localidades de Atalaya y Magdalena, con el fin de revalorizar este recurso fitoterapéutico, como un nuevo elemento a ser tenido en cuenta por el Poder Legislativo y Judicial de la Provincia de Buenos Aires, para la protección y conservación de los humedales en toda su extensión. El inventario incluye: nombre científico, nombre vulgar, familia, hábito, origen geográfico y estatus, uso medicinal, parte del vegetal utilizada para la elaboración del producto fitoterapéutico y forma de preparación y de administración del producto medicinal.

The Rioplatense wetlands of the province of Buenos Aires extend from Punta Lara locality to the Magdalena locality. This zone has begun to degrade since the late nineteenth century by anthropic action. The breach of the environmental protection and conservation laws of the province of Buenos Aires 11.723 y 12.756, has accelerated the retraction of these wetlands and the loss of their biodiversity. Law 12.756, declares Protected Landscape of Provincial Interest for ecotourism development to the area of the north and center of the Rioplaten wetlands between Santiago Island and the Bagliardi spa, not including its southern end that extends from La Balandra spa to the river area of the localities of Atalaya and Magdalena. Existing previous studies on the nutritional value, condimentary and medicinal of numerous plant species present in the north and center of these wetlands, we have made an informative inventory of the medicinal plant species used by the habitants of the southern sector of the wetlands with the objective to revalue this phytotherapeutic resource in all her extension, as a new biology element to be taken into account by the Legislative and Judicial authorities of the Province of Buenos Aires, for the protection and conservation of the wetlands in all its extension. The inventory includes: scientific name, common name, family, habit, geographical origin and status, medicinal use, part of the vegetable used for the preparation of the phytotherapeutic product and form of preparation and administration of the medicinal product.</dc:description>
</item>
<item>
<title>Tamaño óptimo de parcela e incidencia de la podredumbre blanca del capítulo del girasol en el sudeste bonaerense</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77210</link>
<description>Articulo
Optimal plot size and white rot incidence of sunflower evaluated in the southeastern of Buenos Aires Province
Revista de la Facultad de Agronomía; vol. 118, no. 1
Para conocer el tamaño de parcela que permita medir con eficiencia la incidencia de la Podredumbre blanca del capítulo-PBC de girasol (Helianthus annuus L.) se evaluó, en Balcarce, un par de híbridos en ensayos de uniformidad durante 2016 y 2017. Todos los capítulos de cada ensayo se inocularon con Sclerotinia sclerotiorum (Lib.) de Bary. Durante el primer año y para cada híbrido, se delinearon 165 parcelas mínimas, de un surco de 2m x 0,70m (=1,4m2). Mientras que en el segundo, la cantidad fue de 150. En cada una de esas parcelas básicas se registró la incidencia de PBC. Luego se generaron ocho tamaños más, combinando las parcelas mínimas adyacentes en distintos arreglos. El tamaño óptimo se señaló detectando el punto de máxima curvatura en gráficos que relacionaron el coeficiente de variación y los nueve tamaños de parcelas considerados. El análisis de varianza combinado sólo detectó efectos significativos de híbridos (H), años (A) y HxA sobre la incidencia de PBC. Los resultados obtenidos no permitieron señalar un único tamaño de parcela, dado que el óptimo dependió del nivel de resistencia del híbrido y del año de experimento. Así durante 2017, año más favorable a la enfermedad, el tamaño óptimo de parcela para los dos híbridos, resultó inferior que el señalado en 2016. Bajo las condiciones en que se desarrolló el experimento, el uso de parcelas de mayor superficie al señalado, no provocaría un incremento significativo en la fiabilidad de medición de la INC, por unidad de recursos utilizados.; In Balcarce, AR, the white rot incidence by Sclerotinia sclerotiorum was evaluated in two sunflower F1 cultivars grown in uniformity trials during 2016 and 2017. At first year there were 165 minimum plots of 2m long and 0.7m wide (i.e. 1.4m2) with around seven plants each, by hybrid. In the second year, minimum plots reached 150. All capitula were inoculated with pathogen ascospores and white rot incidence was scored at each minimum plot.&#13;
Adjacent minimum plots were combined to generate other plots with larger surfaces. The optimal size was detected by using the maximum curvature method in graphs where the coefficient of variation (%) was drawn in function of plot sizes. Combined analysis of variance detected significant effects of hybrids (H), years (Y) and HxY interaction on disease incidence. Results did not allow indicating a unique plot size, given that the optimum depended on the level of resistance of hybrid as well as the year of the experiment was made. During 2017, the most favorable one for white rot disease appearance, the optimum size was lower than in 2016 for both hybrids.&#13;
Under our experimental conditions, the use of larger plots than the optimum detected herein would not cause a significant increase in the reliability of the disease incidence scoring per unit of resources employed.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77210</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>Para conocer el tamaño de parcela que permita medir con eficiencia la incidencia de la Podredumbre blanca del capítulo-PBC de girasol (Helianthus annuus L.) se evaluó, en Balcarce, un par de híbridos en ensayos de uniformidad durante 2016 y 2017. Todos los capítulos de cada ensayo se inocularon con Sclerotinia sclerotiorum (Lib.) de Bary. Durante el primer año y para cada híbrido, se delinearon 165 parcelas mínimas, de un surco de 2m x 0,70m (=1,4m2). Mientras que en el segundo, la cantidad fue de 150. En cada una de esas parcelas básicas se registró la incidencia de PBC. Luego se generaron ocho tamaños más, combinando las parcelas mínimas adyacentes en distintos arreglos. El tamaño óptimo se señaló detectando el punto de máxima curvatura en gráficos que relacionaron el coeficiente de variación y los nueve tamaños de parcelas considerados. El análisis de varianza combinado sólo detectó efectos significativos de híbridos (H), años (A) y HxA sobre la incidencia de PBC. Los resultados obtenidos no permitieron señalar un único tamaño de parcela, dado que el óptimo dependió del nivel de resistencia del híbrido y del año de experimento. Así durante 2017, año más favorable a la enfermedad, el tamaño óptimo de parcela para los dos híbridos, resultó inferior que el señalado en 2016. Bajo las condiciones en que se desarrolló el experimento, el uso de parcelas de mayor superficie al señalado, no provocaría un incremento significativo en la fiabilidad de medición de la INC, por unidad de recursos utilizados.

In Balcarce, AR, the white rot incidence by Sclerotinia sclerotiorum was evaluated in two sunflower F1 cultivars grown in uniformity trials during 2016 and 2017. At first year there were 165 minimum plots of 2m long and 0.7m wide (i.e. 1.4m2) with around seven plants each, by hybrid. In the second year, minimum plots reached 150. All capitula were inoculated with pathogen ascospores and white rot incidence was scored at each minimum plot.&#13;
Adjacent minimum plots were combined to generate other plots with larger surfaces. The optimal size was detected by using the maximum curvature method in graphs where the coefficient of variation (%) was drawn in function of plot sizes. Combined analysis of variance detected significant effects of hybrids (H), years (Y) and HxY interaction on disease incidence. Results did not allow indicating a unique plot size, given that the optimum depended on the level of resistance of hybrid as well as the year of the experiment was made. During 2017, the most favorable one for white rot disease appearance, the optimum size was lower than in 2016 for both hybrids.&#13;
Under our experimental conditions, the use of larger plots than the optimum detected herein would not cause a significant increase in the reliability of the disease incidence scoring per unit of resources employed.</dc:description>
</item>
<item>
<title>Avaliação de caprinos nas Repúblicas de Cabo Verde e Brasil a partir de índices zoométricos</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77209</link>
<description>Articulo
Zoometric indices of the goats in the Republics of Cape Verde and Brazil
Revista de la Facultad de Agronomía; vol. 118, no. 1
Objetivou-se avaliar os índices zoométricos de populações caprinas brasileiras e cabo-verdianas e verificar sua aptidão zootécnica para produção de carne, leite ou mista. Foram amostradas 1.064 cabras adultas das populações: Alpina, Boer, Anglo-Nubiana, Mambrina, Azul, Gurguéia, Sem Raça Definida do Piauí (SRD-PI), Nambi, Marota, Repartida e as populações cabo-verdianas de cinco ilhas (Fogo, São Nicolau, Santiago, São Vicente e Santo Antão). Avaliaram-se altura da cernelha, altura das patas, altura de garupa, comprimento corporal e perímetro torácico. A partir destas medidas foram calculados cinco índices zoométricos baseados na combinação das variáveis anteriores. Estes índices foram submetidos às análises estatísticas descritivas, análise de variância e teste de Scott-Knott (P&lt;0,05). Verificou-se que as populações com maior aptidão para corte foram SRD-PI e Nambi. As populações Anglo-Nubiana, Gurguéia, Marota e Fogo apresentaram aptidão intermediária.&#13;
A aptidão leiteira foi verificada para as populações de São Nicolau, Santiago, São Vicente, Azul, Santo Antão, Mambrina e Repartida. Os índices zoométricos são úteis para separar as populações de acordo com suas aptidões.; The aim of this study was to evaluate the zoometric indices of goat populations in Brazil and Cape Verde and compare them with populations of know aptitude. It was sampled populations 1064 of adult goats: Alpine, Boer, Anglo-Nubian, Mambrina, Azul, Gurguéia, undefined populations of Piauí (UDB-PI), Nambi, Marota e Repartida. It were analyzed body measures of wither height (WH), brisket height (BH), hip height (CH), body length (BL) and thoracic circumference (TP). With this body measures it was calculated the zoometric indices: length-height (LH=CC/WH), height-height (HH=WH/CH), depth-height (DH=TP/WH), length-depth (LD=BL/TP) and witherbrisket (WB=BH/WH). These indices were submitted to follow analysis: descriptive statistical, variance and Scott- Knott test. According to the scale of aptitude was found the populations with higher meat aptitude were: UDB-PI and Nambi. The Anglo-Nubian populations, Gurguéia, Marota and Fogo showed aptitude for milk and meat. The milk aptitude was found to the population of São Nicolau, Santiago, São Vicente, Azul, Santo Antão, Mambrina and Repartida. The zoometric indices are helpful to separate populations according to their aptitudes.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77209</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>Objetivou-se avaliar os índices zoométricos de populações caprinas brasileiras e cabo-verdianas e verificar sua aptidão zootécnica para produção de carne, leite ou mista. Foram amostradas 1.064 cabras adultas das populações: Alpina, Boer, Anglo-Nubiana, Mambrina, Azul, Gurguéia, Sem Raça Definida do Piauí (SRD-PI), Nambi, Marota, Repartida e as populações cabo-verdianas de cinco ilhas (Fogo, São Nicolau, Santiago, São Vicente e Santo Antão). Avaliaram-se altura da cernelha, altura das patas, altura de garupa, comprimento corporal e perímetro torácico. A partir destas medidas foram calculados cinco índices zoométricos baseados na combinação das variáveis anteriores. Estes índices foram submetidos às análises estatísticas descritivas, análise de variância e teste de Scott-Knott (P&lt;0,05). Verificou-se que as populações com maior aptidão para corte foram SRD-PI e Nambi. As populações Anglo-Nubiana, Gurguéia, Marota e Fogo apresentaram aptidão intermediária.&#13;
A aptidão leiteira foi verificada para as populações de São Nicolau, Santiago, São Vicente, Azul, Santo Antão, Mambrina e Repartida. Os índices zoométricos são úteis para separar as populações de acordo com suas aptidões.

The aim of this study was to evaluate the zoometric indices of goat populations in Brazil and Cape Verde and compare them with populations of know aptitude. It was sampled populations 1064 of adult goats: Alpine, Boer, Anglo-Nubian, Mambrina, Azul, Gurguéia, undefined populations of Piauí (UDB-PI), Nambi, Marota e Repartida. It were analyzed body measures of wither height (WH), brisket height (BH), hip height (CH), body length (BL) and thoracic circumference (TP). With this body measures it was calculated the zoometric indices: length-height (LH=CC/WH), height-height (HH=WH/CH), depth-height (DH=TP/WH), length-depth (LD=BL/TP) and witherbrisket (WB=BH/WH). These indices were submitted to follow analysis: descriptive statistical, variance and Scott- Knott test. According to the scale of aptitude was found the populations with higher meat aptitude were: UDB-PI and Nambi. The Anglo-Nubian populations, Gurguéia, Marota and Fogo showed aptitude for milk and meat. The milk aptitude was found to the population of São Nicolau, Santiago, São Vicente, Azul, Santo Antão, Mambrina and Repartida. The zoometric indices are helpful to separate populations according to their aptitudes.</dc:description>
</item>
<item>
<title>Biofumigación con Brassica juncea: efecto sobre la flora arvense</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77204</link>
<description>Articulo
Biofumigation with Brassica juncea: effect on weeds
Revista de la Facultad de Agronomía; vol. 118, no. 1
La biofumigación con brassicáceas es una táctica biológica que podría contribuir al manejo integrado de malezas en las etapas iniciales de los cultivos hortícolas. El objetivo de este trabajo fue determinar la dosis del biofumigante Brassica juncea L. Czerniak (mostaza parda) técnicamente más eficaz para el manejo de malezas en un sustrato. El ensayo se realizó en cajones de madera que contenían tierra extraída de la capa arable de un suelo de Llavallol, Argentina, que portaba las semillas de la flora del lugar. Se trituraron plantas de mostaza parda y se mezclaron con la tierra, en dosis de 2,5, 5, 10 y 15 kg.m-2. Cada cajón se regó y cubrió con polietileno negro durante 21 días. Paralelamente, se evaluó un control sin biofumigante, con idéntica cobertura y riego. Tres semanas después de extraer el polietileno se contabilizó la cantidad y frecuencia de individuos de cada especie arvense y se midió cobertura y peso seco por tratamiento. La dosis de 2,5 kg.m-2 redujo el número total de individuos de arvenses mono y dicotiledóneas, en particular de Digitaria sanguinalis (L.) Scop. (pasto de cuaresma), Portulaca oleracea L. (verdolaga) y Taraxacum officinalis G.H. Weber ex Wiggers (diente de león), aunque no disminuyó significativamente la biomasa aérea y la cobertura. El tratamiento con 5 kg.m-2 mostró un comportamiento similar al control. Las dosis de 10 y 15 kg.m-2 favorecieron el crecimiento de las malezas. La biofumigación con 2,5 kg.m-2 representa una herramienta alternativa para el manejo integrado de malezas en estadios iniciales de cultivos hortícolas.; Biofumigation with Brassicaceae is a biological tactic which could contribute to the integrated weeds management in the initial stages of horticultural crops. The aim of this study was to determine the dose of the biofumigant Brassica juncea L. Czerniak (brown mustard) technically more effective for the weeds management in a substrate. The test was carried out in wooden drawers that containing ground extracted from the arable layer of a soil of Llavallol, Argentina and including the seeds of the local flora. Brown mustard plants were triturated and mixed with the ground in doses of 2.5, 5, 10 and 15 kg.m-2. Each drawer was irrigated and covered with black polyethylene for 21 days. At the same time, a control without biofumigant, with identical coverage and irrigation was evaluated. Three weeks after extracting polyethylene, the amount and frequency of individuals of each species of weed were counted and the cover and dry weight by treatment were measured. The biofumigant treatment with 2.5 kg.m-2 reduced the total number of individuals of mono and dicotyledonous weeds, in particular of Digitaria sanguinalis (L.) Scop. (large crabgrass), Portulaca oleracea L. (common purslane) y Taraxacum officinalis G.H. Weber ex Wiggers (dandelion), although it did not generate significant reduction of aerial biomass and coverage. The treatment with 5 kg.m-2 showed an action similar to the control. Doses of 10 and 15 kg.m-2 favored the growth of weeds. Biofumigation with 2.5 kg.m-2 represents an alternative tactic for the integrated weeds management in the initial stages of horticultural crops.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77204</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>La biofumigación con brassicáceas es una táctica biológica que podría contribuir al manejo integrado de malezas en las etapas iniciales de los cultivos hortícolas. El objetivo de este trabajo fue determinar la dosis del biofumigante Brassica juncea L. Czerniak (mostaza parda) técnicamente más eficaz para el manejo de malezas en un sustrato. El ensayo se realizó en cajones de madera que contenían tierra extraída de la capa arable de un suelo de Llavallol, Argentina, que portaba las semillas de la flora del lugar. Se trituraron plantas de mostaza parda y se mezclaron con la tierra, en dosis de 2,5, 5, 10 y 15 kg.m-2. Cada cajón se regó y cubrió con polietileno negro durante 21 días. Paralelamente, se evaluó un control sin biofumigante, con idéntica cobertura y riego. Tres semanas después de extraer el polietileno se contabilizó la cantidad y frecuencia de individuos de cada especie arvense y se midió cobertura y peso seco por tratamiento. La dosis de 2,5 kg.m-2 redujo el número total de individuos de arvenses mono y dicotiledóneas, en particular de Digitaria sanguinalis (L.) Scop. (pasto de cuaresma), Portulaca oleracea L. (verdolaga) y Taraxacum officinalis G.H. Weber ex Wiggers (diente de león), aunque no disminuyó significativamente la biomasa aérea y la cobertura. El tratamiento con 5 kg.m-2 mostró un comportamiento similar al control. Las dosis de 10 y 15 kg.m-2 favorecieron el crecimiento de las malezas. La biofumigación con 2,5 kg.m-2 representa una herramienta alternativa para el manejo integrado de malezas en estadios iniciales de cultivos hortícolas.

Biofumigation with Brassicaceae is a biological tactic which could contribute to the integrated weeds management in the initial stages of horticultural crops. The aim of this study was to determine the dose of the biofumigant Brassica juncea L. Czerniak (brown mustard) technically more effective for the weeds management in a substrate. The test was carried out in wooden drawers that containing ground extracted from the arable layer of a soil of Llavallol, Argentina and including the seeds of the local flora. Brown mustard plants were triturated and mixed with the ground in doses of 2.5, 5, 10 and 15 kg.m-2. Each drawer was irrigated and covered with black polyethylene for 21 days. At the same time, a control without biofumigant, with identical coverage and irrigation was evaluated. Three weeks after extracting polyethylene, the amount and frequency of individuals of each species of weed were counted and the cover and dry weight by treatment were measured. The biofumigant treatment with 2.5 kg.m-2 reduced the total number of individuals of mono and dicotyledonous weeds, in particular of Digitaria sanguinalis (L.) Scop. (large crabgrass), Portulaca oleracea L. (common purslane) y Taraxacum officinalis G.H. Weber ex Wiggers (dandelion), although it did not generate significant reduction of aerial biomass and coverage. The treatment with 5 kg.m-2 showed an action similar to the control. Doses of 10 and 15 kg.m-2 favored the growth of weeds. Biofumigation with 2.5 kg.m-2 represents an alternative tactic for the integrated weeds management in the initial stages of horticultural crops.</dc:description>
</item>
<item>
<title>EMATER/RS - ASCAR: estudo de caso sobre o assistente social na política de ATER</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77203</link>
<description>Articulo
EMATER / RS - ASCAR: Case study on the social assistant in ATER policy
Revista de la Facultad de Agronomía; vol. 118, no. 1
A assistência técnica e extensão rural (ATER) esta pautada na construção coletiva do conhecimento e na valorização do saber para a redução das desigualdades, preocupando-se com as condições e qualidade de vida da população rural e o pleno exercício da cidadania. No Rio Grande do Sul a Associação Rio-Grandense de Empreendimentos de Assistência Técnica e Extensão Rural (EMATER/RS – ASCAR) é responsável pelo desenvolvimento de ações de ATER. Para tanto, conta com uma equipe multidisciplinar, da qual faz parte o assistente social. Com base no exposto, objetivou-se compreender a dinâmica de trabalho dos assistentes sociais lotados na EMATER/RS e como a instituição está organizada no tocante ao trabalho com a questão social e suas expressões. Desta maneira, delimitou-se o campo de pesquisa aos profissionais assistentes sociais lotados na EMATER/RS, sendo os dados coletados a partir de um estudo qualitativo, através de entrevista estruturada – composta por perguntas abertas – e pesquisa bibliográfica. Os resultados demonstraram que o número de assistentes sociais vinculadas à EMATER/RS é de apenas duas profissionais, sendo este número insuficiente para atender as demandas de todo o estado. Todavia, esses resultados também apontaram que o assistente social tem sido cada vez mais reconhecido pelo público atendido e demais agentes de ATER.; Technical assistance and rural extension (ATER) is based on the collective construction of knowledge and the valorisation of knowledge for the reduction of inequalities, being concerned with the conditions and quality of life of the rural population and the full exercise of citizenship. In Rio Grande do Sul, the Rio-Grandense Association of Enterprises for Technical Assistance and Rural Extension (EMATER / RS - ASCAR) is responsible for the development of ATER actions. For such, it counts on a multidisciplinary team, of which the social worker is part.&#13;
Based on the above, the objective was to understand the work dynamics of the social workers crowded in EMATER / RS and how the institution is organized in relation to work with the social question and its expressions.&#13;
In this way, the field of research was delimited to the social assistants crowded at EMATER / RS, and the data were collected from a qualitative study, through a structured interview - composed of open questions - and bibliographic research. number of social workers linked to EMATER / RS is only two professionals, and this number is insufficient to meet the demands of the entire state. However, these results also pointed out that the social worker has been increasingly recognized by the attending public and other ATER agents.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77203</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>A assistência técnica e extensão rural (ATER) esta pautada na construção coletiva do conhecimento e na valorização do saber para a redução das desigualdades, preocupando-se com as condições e qualidade de vida da população rural e o pleno exercício da cidadania. No Rio Grande do Sul a Associação Rio-Grandense de Empreendimentos de Assistência Técnica e Extensão Rural (EMATER/RS – ASCAR) é responsável pelo desenvolvimento de ações de ATER. Para tanto, conta com uma equipe multidisciplinar, da qual faz parte o assistente social. Com base no exposto, objetivou-se compreender a dinâmica de trabalho dos assistentes sociais lotados na EMATER/RS e como a instituição está organizada no tocante ao trabalho com a questão social e suas expressões. Desta maneira, delimitou-se o campo de pesquisa aos profissionais assistentes sociais lotados na EMATER/RS, sendo os dados coletados a partir de um estudo qualitativo, através de entrevista estruturada – composta por perguntas abertas – e pesquisa bibliográfica. Os resultados demonstraram que o número de assistentes sociais vinculadas à EMATER/RS é de apenas duas profissionais, sendo este número insuficiente para atender as demandas de todo o estado. Todavia, esses resultados também apontaram que o assistente social tem sido cada vez mais reconhecido pelo público atendido e demais agentes de ATER.

Technical assistance and rural extension (ATER) is based on the collective construction of knowledge and the valorisation of knowledge for the reduction of inequalities, being concerned with the conditions and quality of life of the rural population and the full exercise of citizenship. In Rio Grande do Sul, the Rio-Grandense Association of Enterprises for Technical Assistance and Rural Extension (EMATER / RS - ASCAR) is responsible for the development of ATER actions. For such, it counts on a multidisciplinary team, of which the social worker is part.&#13;
Based on the above, the objective was to understand the work dynamics of the social workers crowded in EMATER / RS and how the institution is organized in relation to work with the social question and its expressions.&#13;
In this way, the field of research was delimited to the social assistants crowded at EMATER / RS, and the data were collected from a qualitative study, through a structured interview - composed of open questions - and bibliographic research. number of social workers linked to EMATER / RS is only two professionals, and this number is insufficient to meet the demands of the entire state. However, these results also pointed out that the social worker has been increasingly recognized by the attending public and other ATER agents.</dc:description>
</item>
<item>
<title>Partição da energia e produção de metano em ovinos alimentados com feno de Andropogon Gayanus colhido em três diferentes idades</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77202</link>
<description>Articulo
Energy partition and methane production in sheep fed with Andropogon Gayanus hays in three different ages
Revista de la Facultad de Agronomía; vol. 118, no. 1
Foi realizado estudo para descrever a partição da energia e produção de metano por ovinos alimentados com fenos do capim Andropogon gayanus colhidos aos 56, 84 e 112 dias de crescimento. Utilizou-se a metodologia da calorimetria indireta para mensuração das perdas de energia e para a determinação da energia digestível (ED), metabolizável (EM) e líquida (EL). O delineamento experimental foi inteiramente casualizado, sendo constituído de três tratamentos e seis repetições. As médias foram comparadas pelo teste Studant-Newman- Keuls (SNK) ao nível de 5% de significância. O feno, cujo material foi colhido aos 56 dias, resultou em maior (P&lt;0,05) consumo de energia digestível (CED) em relação aos materiais fenados com 84 e 112 dias de rebrote.&#13;
As perdas diárias de energia através da urina, do metano e do incremento calórico não apresentaram diferença (P&gt;0,05) entre os tratamentos. O feno contendo material colhido aos 56 dias apresentou valor de digestibilidade aparente da energia bruta (DAEB) superior (P&lt;0,5) aos demais tratamentos que não diferiram (P&gt;0,05) entre si.&#13;
O feno colhido as 56 dias apresentou maior valor de energia digestível e energia metabolizavél em relação aos demais fenos que não diferiram entre si (P&gt;0,05). A produção de metano não variou (P&gt;0,05) entre os tratamentos estudados.; A study was conducted to describe the energy partition and methane production by sheep fed grass hay of Andropogon gayanus harvested at 56, 84 and 112 days of growth. We used the methodology of indirect calorimetry to measure energy losses and to determine the digestible energy (DE), metabolizable (ME) and liquid (EL). The experimental design was completely randomized, consisting of three treatments and six replications.&#13;
Means were compared by Studant -Newman -Keuls (SNK) test at 5 % significance level. Hays was collected at 56 days, resulted in higher (P &amp;lt; 0.05) digestible energy intake (DEI) in relation to hays 84 and 112 days of regrowth.&#13;
The daily energy losses through urine, methane and heat increment did not differ (P&amp;gt; 0.05) between treatments.&#13;
Hay containing material collected at 56 days showed apparent digestibility of the gross energy value higher ( P &amp;lt; 0.5) to the other treatments did not differ ( P&amp;gt; 0.05 ) between them. Hay harvested the 56 days had higher digestible energy and metabolizable energy value compared to other hays that did not differ (P&amp;gt; 0.05). The methane production did not change (P&amp;gt; 0.05) between the treatments.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77202</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>Foi realizado estudo para descrever a partição da energia e produção de metano por ovinos alimentados com fenos do capim Andropogon gayanus colhidos aos 56, 84 e 112 dias de crescimento. Utilizou-se a metodologia da calorimetria indireta para mensuração das perdas de energia e para a determinação da energia digestível (ED), metabolizável (EM) e líquida (EL). O delineamento experimental foi inteiramente casualizado, sendo constituído de três tratamentos e seis repetições. As médias foram comparadas pelo teste Studant-Newman- Keuls (SNK) ao nível de 5% de significância. O feno, cujo material foi colhido aos 56 dias, resultou em maior (P&lt;0,05) consumo de energia digestível (CED) em relação aos materiais fenados com 84 e 112 dias de rebrote.&#13;
As perdas diárias de energia através da urina, do metano e do incremento calórico não apresentaram diferença (P&gt;0,05) entre os tratamentos. O feno contendo material colhido aos 56 dias apresentou valor de digestibilidade aparente da energia bruta (DAEB) superior (P&lt;0,5) aos demais tratamentos que não diferiram (P&gt;0,05) entre si.&#13;
O feno colhido as 56 dias apresentou maior valor de energia digestível e energia metabolizavél em relação aos demais fenos que não diferiram entre si (P&gt;0,05). A produção de metano não variou (P&gt;0,05) entre os tratamentos estudados.

A study was conducted to describe the energy partition and methane production by sheep fed grass hay of Andropogon gayanus harvested at 56, 84 and 112 days of growth. We used the methodology of indirect calorimetry to measure energy losses and to determine the digestible energy (DE), metabolizable (ME) and liquid (EL). The experimental design was completely randomized, consisting of three treatments and six replications.&#13;
Means were compared by Studant -Newman -Keuls (SNK) test at 5 % significance level. Hays was collected at 56 days, resulted in higher (P &amp;lt; 0.05) digestible energy intake (DEI) in relation to hays 84 and 112 days of regrowth.&#13;
The daily energy losses through urine, methane and heat increment did not differ (P&amp;gt; 0.05) between treatments.&#13;
Hay containing material collected at 56 days showed apparent digestibility of the gross energy value higher ( P &amp;lt; 0.5) to the other treatments did not differ ( P&amp;gt; 0.05 ) between them. Hay harvested the 56 days had higher digestible energy and metabolizable energy value compared to other hays that did not differ (P&amp;gt; 0.05). The methane production did not change (P&amp;gt; 0.05) between the treatments.</dc:description>
</item>
<item>
<title>Qualidade de frutos de híbridos de melancia com sementes</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77199</link>
<description>Articulo
Fruit quality of watermelon hybrids with seeds
Revista de la Facultad de Agronomía; vol. 118, no. 1
O presente trabalho objetivou avaliar a qualidade pós-colheita de dois híbridos de melancia com sementes cultivadas sob manejo convencional. As características de qualidade analisadas foram: massa fresca; diâmetro longitudinal e transversal; índice de formato do fruto (IF: DL/DT); espessura da casca; firmeza da polpa; sólidos solúveis; acidez titulável; pH; SS/AT; açúcares solúveis totais e redutores; pectina solúvel; vitamina C; carotenoides totais; licopeno; flavonoides; antocianinas e polifenóis extraíveis totais. O ensaio em condições laboratoriais foi estabelecido em delineamento inteiramente casualizado (DIC). Os resultados foram submetidos à análise de variância (ANOVA). Os híbridos apresentaram massa fresca, DL/DT, cor, sólidos solúveis, acidez titulável e SS/AT satisfatórios para comercialização; com destaque para o híbrido ‘Boston’ que apresentou maior teor de sólidos solúveis (9.90 °Brix), açúcares solúveis totais (6.66 %) e SS/AT (86.24). Para compostos bioativos, o híbrido ‘Boston’ apresentou valores médios superiores para carotenoides totais (2.03 mg 100g-1) e flavonoides amarelos (3.21 mg 100g-1), entretanto, o híbrido ‘Quetzali’ obteve destaque para os polifenóis extraíveis totais (194.36 mg 100g-1), podendo, desta forma, ser usados na promoção da saúde humana. Embora os híbridos avaliados tenham se mostrado qualitativamente favoráveis ao consumo, tenham se mostrado qualitativamente favoráveis ao consumo, os resultados aqui encontrados indicam estreitamento da base genética, o que torna necessário a avaliação de outros híbridos.; This investigation was aimed to evaluate the quality postharvest of two seeds watermelon hybrids grown under conventional management. The quality characteristics analyzed were: fresh mass; longitudinal and transverse diameter; fruit format index (IF: DL/DT); shell thickness; pulp firmness; soluble solids; titratable acidity; pH; SS/TA ratio; total soluble and reducing sugars; soluble pectin; vitamin C; total carotenoids; lycopene; yellow flavonoids; anthocyanins and total extractable polyphenols. A completely randomized design (CRD) was carried out. The results were submitted to analysis of variance (ANOVA). Those hybrids showed fresh mass, DL/DT, color, soluble solids, titratable acidity and SS/TA satisfactory for commercialization; with emphasis on the 'Boston' hybrid which showed higher soluble solids content (9.90 ° Brix), total soluble sugars (6.66%) and SS/TA (86.24). For bioactive compounds, 'Boston' hybrid had higher mean values for total carotenoids (2.03 mg 100g-1) and yellow flavonoids (3.21 mg 100g-1), however, the 'Quetzali' hybrid was highlighted for extractable total polyphenols (194.36 mg 100g-1), and thus can be used to promote human health. Although the hybrids tested have shown to be qualitatively favorable to consumption, these results indicate a narrowing of the genetic base, which makes it necessary the evaluation of other watermelon seeds hybrids.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77199</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>O presente trabalho objetivou avaliar a qualidade pós-colheita de dois híbridos de melancia com sementes cultivadas sob manejo convencional. As características de qualidade analisadas foram: massa fresca; diâmetro longitudinal e transversal; índice de formato do fruto (IF: DL/DT); espessura da casca; firmeza da polpa; sólidos solúveis; acidez titulável; pH; SS/AT; açúcares solúveis totais e redutores; pectina solúvel; vitamina C; carotenoides totais; licopeno; flavonoides; antocianinas e polifenóis extraíveis totais. O ensaio em condições laboratoriais foi estabelecido em delineamento inteiramente casualizado (DIC). Os resultados foram submetidos à análise de variância (ANOVA). Os híbridos apresentaram massa fresca, DL/DT, cor, sólidos solúveis, acidez titulável e SS/AT satisfatórios para comercialização; com destaque para o híbrido ‘Boston’ que apresentou maior teor de sólidos solúveis (9.90 °Brix), açúcares solúveis totais (6.66 %) e SS/AT (86.24). Para compostos bioativos, o híbrido ‘Boston’ apresentou valores médios superiores para carotenoides totais (2.03 mg 100g-1) e flavonoides amarelos (3.21 mg 100g-1), entretanto, o híbrido ‘Quetzali’ obteve destaque para os polifenóis extraíveis totais (194.36 mg 100g-1), podendo, desta forma, ser usados na promoção da saúde humana. Embora os híbridos avaliados tenham se mostrado qualitativamente favoráveis ao consumo, tenham se mostrado qualitativamente favoráveis ao consumo, os resultados aqui encontrados indicam estreitamento da base genética, o que torna necessário a avaliação de outros híbridos.

This investigation was aimed to evaluate the quality postharvest of two seeds watermelon hybrids grown under conventional management. The quality characteristics analyzed were: fresh mass; longitudinal and transverse diameter; fruit format index (IF: DL/DT); shell thickness; pulp firmness; soluble solids; titratable acidity; pH; SS/TA ratio; total soluble and reducing sugars; soluble pectin; vitamin C; total carotenoids; lycopene; yellow flavonoids; anthocyanins and total extractable polyphenols. A completely randomized design (CRD) was carried out. The results were submitted to analysis of variance (ANOVA). Those hybrids showed fresh mass, DL/DT, color, soluble solids, titratable acidity and SS/TA satisfactory for commercialization; with emphasis on the 'Boston' hybrid which showed higher soluble solids content (9.90 ° Brix), total soluble sugars (6.66%) and SS/TA (86.24). For bioactive compounds, 'Boston' hybrid had higher mean values for total carotenoids (2.03 mg 100g-1) and yellow flavonoids (3.21 mg 100g-1), however, the 'Quetzali' hybrid was highlighted for extractable total polyphenols (194.36 mg 100g-1), and thus can be used to promote human health. Although the hybrids tested have shown to be qualitatively favorable to consumption, these results indicate a narrowing of the genetic base, which makes it necessary the evaluation of other watermelon seeds hybrids.</dc:description>
</item>
<item>
<title>Seleção de bactérias para controle biológico de Meloidogyne incognita em figueira</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77081</link>
<description>Articulo
Selection of bacteria for biological control of Meloidogyne incognita in fig.
Revista de la Facultad de Agronomía; vol. 118, no. 1
A inserção do controle biológico no manejo integrado de M. incognita constitui-se como uma estratégia importante para a cultura da figueira no Brasil, visto que não estão disponíveis nematicidas e porta-enxertos resistentes no país. Entre os biocontroladores, rizobactérias apresentam potencial, pois podem atuar promovendo o crescimento vegetal e ou inibindo os nematoides. Assim, o objetivo desse trabalho foi isolar bactérias com potencial para o biocontrole de M. incognita a partir de raízes de figueira e rochas de folhelhos betuminosos e selecionar isolados mais promissores através de ensaios in vitro. 124 isolados foram obtidos de folhelhos betuminosos e de raízes de figueira e avaliados em ensaios in vitro quanto ao efeito sobre ovos e juvenis de segundo estágio de M. incognita e produção de compostos relacionados ao controle biológico de nematoides. A partir dos resultados obtidos, 14 bactérias foram consideradas mais promissoras, produzindo pelo menos um composto relacionado ao biocontrole de fitonematoides, entre os cinco compostos testados, e altos níveis de mortalidade (78-100%) ou inibição da eclosão (73-100%) dos juvenis de segundo estádio do nematóide. A redução no numero de isolados obtida no presente estudo é importante para viabilizar estudos in vivo confirmando o potencial destas rizobactérias para controle de M. incognita em figueira.; The inclusion of biological control in the integrated management of M. incognita was established as an important strategy for the fig tree of culture in Brazil, as they are not available nematicides and rootstocks resistant in the country. Among the biocontrol, rhizobacteria have potential because they can act to promote plant growth and inhibiting or nematodes. The objective of this work was to isolate bacteria with potential for biocontrol of M.&#13;
incognita from fig roots and bituminous shale rocks and select the most promising isolated by in vitro assays. 124 isolates were obtained from bituminous shale and fig tree roots and evaluated in vitro tests on the effect on eggs and juveniles of second stage of M. incognita and production of compounds related to the biological control of nematodes. From the results obtained, 14 bacteria were considered more promising, producing at least one compound related to the biocontrol plant parasitic nematode, of the five tested compounds and high levels of mortality (78-100%) or inhibition of hatching (73-100% ) of second stage juveniles of the nematode. The reduction in the number of isolates obtained in this study is important to enable in vivo studies confirming the potential of these rhizobacteria to control M. incognita in fig.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77081</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>A inserção do controle biológico no manejo integrado de M. incognita constitui-se como uma estratégia importante para a cultura da figueira no Brasil, visto que não estão disponíveis nematicidas e porta-enxertos resistentes no país. Entre os biocontroladores, rizobactérias apresentam potencial, pois podem atuar promovendo o crescimento vegetal e ou inibindo os nematoides. Assim, o objetivo desse trabalho foi isolar bactérias com potencial para o biocontrole de M. incognita a partir de raízes de figueira e rochas de folhelhos betuminosos e selecionar isolados mais promissores através de ensaios in vitro. 124 isolados foram obtidos de folhelhos betuminosos e de raízes de figueira e avaliados em ensaios in vitro quanto ao efeito sobre ovos e juvenis de segundo estágio de M. incognita e produção de compostos relacionados ao controle biológico de nematoides. A partir dos resultados obtidos, 14 bactérias foram consideradas mais promissoras, produzindo pelo menos um composto relacionado ao biocontrole de fitonematoides, entre os cinco compostos testados, e altos níveis de mortalidade (78-100%) ou inibição da eclosão (73-100%) dos juvenis de segundo estádio do nematóide. A redução no numero de isolados obtida no presente estudo é importante para viabilizar estudos in vivo confirmando o potencial destas rizobactérias para controle de M. incognita em figueira.

The inclusion of biological control in the integrated management of M. incognita was established as an important strategy for the fig tree of culture in Brazil, as they are not available nematicides and rootstocks resistant in the country. Among the biocontrol, rhizobacteria have potential because they can act to promote plant growth and inhibiting or nematodes. The objective of this work was to isolate bacteria with potential for biocontrol of M.&#13;
incognita from fig roots and bituminous shale rocks and select the most promising isolated by in vitro assays. 124 isolates were obtained from bituminous shale and fig tree roots and evaluated in vitro tests on the effect on eggs and juveniles of second stage of M. incognita and production of compounds related to the biological control of nematodes. From the results obtained, 14 bacteria were considered more promising, producing at least one compound related to the biocontrol plant parasitic nematode, of the five tested compounds and high levels of mortality (78-100%) or inhibition of hatching (73-100% ) of second stage juveniles of the nematode. The reduction in the number of isolates obtained in this study is important to enable in vivo studies confirming the potential of these rhizobacteria to control M. incognita in fig.</dc:description>
</item>
<item>
<title>Semeadoras adubadoras com diferentes mecanismos dosadores de sementes e a influência da velocidade na semeadura do milho</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77073</link>
<description>Articulo
Fertilizer seeders with different seed doser mechanisms and the influence of speed on corn sowing
Revista de la Facultad de Agronomía; vol. 118, no. 1
O tipo de funcionamento do mecanismo dosador das semeadoras e a velocidade de operação, são determinantes na produtividade da cultura. O presente trabalho teve como objetivo estudar a influência da velocidade de deslocamento na semeadura do milho, com diferentes modelos de semeadoras e mecanismos dosadores de semente. Sendo os mecanismos dosadores: disco alveolado perfurado horizontal com acionamento mecânico, pneumático e pneumático com kit auxiliar eSet. O delineamento experimental foi realizado em blocos ao acaso, com 04 repetições sendo um fatorial com três diferentes velocidades de deslocamento 5, 7 e 9 km h-1 e dois tipos de mecanismo dosador de sementes sendo um com kit auxiliar. As variáveis mensuradas foram: a distribuição longitudinal espaçamentos múltiplos, falhos, aceitáveis, peso de mil sementes, número de espigas, coeficiente de variação, precisão e a produtividade de milho. O incremento na velocidade de deslocamento das semeadoras interferiu, nas variáveis: falhos, múltiplos, aceitáveis, número de plantas e número de plantas com espiga. A semeadora John Deere com mecanismo dosador pneumático com o kit eSet na velocidade de 5 km h-1 ficou dentro do nível tolerado de precisão dos espaçamentos entre plantas. O aumento de velocidade nas semeadoras e os respectivos mecanismos dosadores não tiveram influência na produtividade do milho.; The efficiency of the metering mechanism of seeders and the operation speed can be decisive in crop yield. This work aimed to study the influence of the travel speed in corn seeding, with different models of seeders and dispensing mechanisms seed. As the meter mechanism: perforated horizontal plate with mechanical drive, pneumatic and pneumatic assist with eSet kit. The experiment was conducted in a randomized block design, with 04 repetitions with a factorial design with three different travel speeds 5, 7 and 9 km h-1 and two types of seed metering system, one with aid kit. As varied measuradas to: longitudinal distribution spacing multiplex index, miss index, feed index, weight of thousand seeds, number of spikes, coefficient of variation, precision and yield of corn. Or increase in velocity of seeds, interfered, in the variables: miss, multiple, acceptable number of plants and number of plants with spike. A John Deere seeding machine with pneumatic dosing mechanism as an eSet kit at a speed of 5 km h-1 within the tolerated level of precision spacings between plants. The speed increase the planters and their dispensing mechanisms had no influence on corn productivity.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77073</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>O tipo de funcionamento do mecanismo dosador das semeadoras e a velocidade de operação, são determinantes na produtividade da cultura. O presente trabalho teve como objetivo estudar a influência da velocidade de deslocamento na semeadura do milho, com diferentes modelos de semeadoras e mecanismos dosadores de semente. Sendo os mecanismos dosadores: disco alveolado perfurado horizontal com acionamento mecânico, pneumático e pneumático com kit auxiliar eSet. O delineamento experimental foi realizado em blocos ao acaso, com 04 repetições sendo um fatorial com três diferentes velocidades de deslocamento 5, 7 e 9 km h-1 e dois tipos de mecanismo dosador de sementes sendo um com kit auxiliar. As variáveis mensuradas foram: a distribuição longitudinal espaçamentos múltiplos, falhos, aceitáveis, peso de mil sementes, número de espigas, coeficiente de variação, precisão e a produtividade de milho. O incremento na velocidade de deslocamento das semeadoras interferiu, nas variáveis: falhos, múltiplos, aceitáveis, número de plantas e número de plantas com espiga. A semeadora John Deere com mecanismo dosador pneumático com o kit eSet na velocidade de 5 km h-1 ficou dentro do nível tolerado de precisão dos espaçamentos entre plantas. O aumento de velocidade nas semeadoras e os respectivos mecanismos dosadores não tiveram influência na produtividade do milho.

The efficiency of the metering mechanism of seeders and the operation speed can be decisive in crop yield. This work aimed to study the influence of the travel speed in corn seeding, with different models of seeders and dispensing mechanisms seed. As the meter mechanism: perforated horizontal plate with mechanical drive, pneumatic and pneumatic assist with eSet kit. The experiment was conducted in a randomized block design, with 04 repetitions with a factorial design with three different travel speeds 5, 7 and 9 km h-1 and two types of seed metering system, one with aid kit. As varied measuradas to: longitudinal distribution spacing multiplex index, miss index, feed index, weight of thousand seeds, number of spikes, coefficient of variation, precision and yield of corn. Or increase in velocity of seeds, interfered, in the variables: miss, multiple, acceptable number of plants and number of plants with spike. A John Deere seeding machine with pneumatic dosing mechanism as an eSet kit at a speed of 5 km h-1 within the tolerated level of precision spacings between plants. The speed increase the planters and their dispensing mechanisms had no influence on corn productivity.</dc:description>
</item>
<item>
<title>Desinfecção de mudas e do solo com óleo de eucalipto na produção de mandioquinha-salsa</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77071</link>
<description>Articulo
Disinfection of cuttings and of soil with eucalyptus oil on Peruvian carrot yield
Revista de la Facultad de Agronomía; vol. 118, no. 1
Foi estudado o efeito do óleo de eucalipto na desinfecção de mudas e do solo sobre a produção e no controle de doenças durante o ciclo de cultivo da mandioquinha-salsa ‘Amarela de Carandaí’. Os tratamentos originaram-se do fatorial 2 (sem-MS e com-MC desinfecção das mudas em solução aquosa com 1% do óleo, por 35”) x 3 (sem- SSPOE e com-SCPOE pulverização do solo, antes ou depois do plantio, com solução aquosa com 2% do óleo).&#13;
Foram realizadas colheitas das plantas aos 224 e 266 dias após o plantio-DAP. As massas frescas de folhas, rebentos e coroas foram semelhantes estatisticamente dentre as MS mas, dentro das MC, os maiores valores corresponderam às plantadas em SCPOE. As maiores produções de raízes comerciais aos 224DAP (5,94 e 6,90 t ha-1) e aos 266DAP (7,07 e 7,47 t ha-1) foram dos tratamentos onde as MS e MC foram plantadas em SCPOE antes do plantio. Foram observados sintomas de queima das folhas (associação de Alternaria sp. e de Septoria sp.) e de podridões das coroas e dos rebentos (Sclerotium sp.). Concluiu-se que, para se obter maior produção de raízes comerciais da mandioquinha-salsa, usando mudas desinfetadas ou não, deve-se pulverizar óleo de eucalipto no solo antes do plantio, embora sem esperar efeito sobre doenças foliares e podridões de final de ciclo.; The effect of eucalyptus oil as disinfectant of cuttings and of soil on yield and disease control during cultivation cycle of ‘Amarela de Carandaí’ Peruvian carrot, was studied. Treatments were originated from 2 (without-MS and with MC disinfection of cuttings in aqueous solution with 1% of oil, for 35”) x 3 (without-SSPOE and with-SCPOE sprinkling on the soil, before and after planting, with aqueous solution with 2% of oil) factorial scheme. Harvests were done on 224 and 266 days after planting-DAP. Fresh masses of leaves, shoots and crowns were similar statistically among MS but, among MC, the highest values corresponded to those planted in SCPOE. The highest yields of commercial roots on 224DAP (5.94 and 6.90 t ha-1) and 266DAP (7.07 and 7.47 t ha-1) were from treatments where MS and MC were planted in SCPOE before planting. Symptoms of burning leaves (association of Alternaria sp and of Septoria sp) and of rot of crows and shoots (Sclerotium sp) were observed. It was concluded that, in order to obtaining a greater yield of commercial roots of Peruvian carrot, using cuttings that were disinfected or not, eucalyptus oil must be sprinkled on soil before planting, although without waiting effects on foliar diseases and rots at the final of the cycle.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77071</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>Foi estudado o efeito do óleo de eucalipto na desinfecção de mudas e do solo sobre a produção e no controle de doenças durante o ciclo de cultivo da mandioquinha-salsa ‘Amarela de Carandaí’. Os tratamentos originaram-se do fatorial 2 (sem-MS e com-MC desinfecção das mudas em solução aquosa com 1% do óleo, por 35”) x 3 (sem- SSPOE e com-SCPOE pulverização do solo, antes ou depois do plantio, com solução aquosa com 2% do óleo).&#13;
Foram realizadas colheitas das plantas aos 224 e 266 dias após o plantio-DAP. As massas frescas de folhas, rebentos e coroas foram semelhantes estatisticamente dentre as MS mas, dentro das MC, os maiores valores corresponderam às plantadas em SCPOE. As maiores produções de raízes comerciais aos 224DAP (5,94 e 6,90 t ha-1) e aos 266DAP (7,07 e 7,47 t ha-1) foram dos tratamentos onde as MS e MC foram plantadas em SCPOE antes do plantio. Foram observados sintomas de queima das folhas (associação de Alternaria sp. e de Septoria sp.) e de podridões das coroas e dos rebentos (Sclerotium sp.). Concluiu-se que, para se obter maior produção de raízes comerciais da mandioquinha-salsa, usando mudas desinfetadas ou não, deve-se pulverizar óleo de eucalipto no solo antes do plantio, embora sem esperar efeito sobre doenças foliares e podridões de final de ciclo.

The effect of eucalyptus oil as disinfectant of cuttings and of soil on yield and disease control during cultivation cycle of ‘Amarela de Carandaí’ Peruvian carrot, was studied. Treatments were originated from 2 (without-MS and with MC disinfection of cuttings in aqueous solution with 1% of oil, for 35”) x 3 (without-SSPOE and with-SCPOE sprinkling on the soil, before and after planting, with aqueous solution with 2% of oil) factorial scheme. Harvests were done on 224 and 266 days after planting-DAP. Fresh masses of leaves, shoots and crowns were similar statistically among MS but, among MC, the highest values corresponded to those planted in SCPOE. The highest yields of commercial roots on 224DAP (5.94 and 6.90 t ha-1) and 266DAP (7.07 and 7.47 t ha-1) were from treatments where MS and MC were planted in SCPOE before planting. Symptoms of burning leaves (association of Alternaria sp and of Septoria sp) and of rot of crows and shoots (Sclerotium sp) were observed. It was concluded that, in order to obtaining a greater yield of commercial roots of Peruvian carrot, using cuttings that were disinfected or not, eucalyptus oil must be sprinkled on soil before planting, although without waiting effects on foliar diseases and rots at the final of the cycle.</dc:description>
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<item>
<title>Cooperativas pampeanas, recambio generacional y diversidad rural en las primeras décadas del siglo XXI: estudio de la cooperativa agropecuaria Unión de Justiniano Posse</title>
<link>http://sedici.unlp.edu.ar:80/handle/10915/77068</link>
<description>Articulo
Pampa cooperative, generacional replacement and rural diversity in the first decades of the century. A study of the Union Agricultural Cooperative of Justianiano Posse
Revista de la Facultad de Agronomía; vol. 118, no. 1
Esta investigación se refiere a un análisis de las transformaciones de los vínculos entre las cooperativas agropecuarias pampeanas y sus socios, abordando este tema desde una mirada más amplia de transformaciones de las relaciones de “los productores” con “el mundo asociativo” y también con el territorio local y la actividad agropecuaria. El enfoque se centra específicamente sobre los recambios generacionales analizados en las siguientes dimensiones de la actividad agropecuaria: la dimensión privada (las diversidades familiares), la dimensión económica (la diversidad del trabajo) y la dimensión de la vida pública (la diversidad de participación en la cooperativa y otros ámbitos). En un contexto de profundas transformaciones de la actividad agropecuaria y de los territorios rurales, más aún en la zona núcleo pampeana, el objetivo es caracterizar la diversidad de productores vinculados a las cooperativas, sus formas de realizar la actividad agropecuaria y modos de participación, y qué nuevos estilos están adoptando estas relaciones con las cooperativas. Este abanico de diversidades está en efecto atravesado por las transformaciones producidas por los recambios generacionales. Tomamos el caso de la cooperativa Unión de Justiniano Posse de la localidad de San Marcos, en la provincia de Córdoba, situada en plena zona núcleo y que ha formulado una demanda de investigación sobre el tema de los recambios generacionales en la organización y en la actividad agropecuaria. La metodología de la investigación se enmarca entonces en la etapa de diagnóstico de una “investigación acción”. Asimismo, se trabaja con una base de datos elaborada sobre una muestra razonada de 50 miembros activos de esta cooperativa en esa localidad.; This research is based on an analysis of the transformations of the links between the agricultural cooperatives of the pampa region and their members, addressing this topic from the wider perspective of transformation of farmers’ relationship with "the associative world "and also with the local territory and agricultural activity. The focus is specifically on the generational replacement discussed in the following dimensions of farming activity : the private dimension (family diversity), the economic dimension (diversity of work) and the dimension of public life (diversity of the participation in the cooperative, and in other areas). In a context of profound transformations of farming and rural territories, especially in the core soya area of the pampa, the aim is to characterize the diversity of farmers related to cooperatives, their ways of managing farming activity and modes of participation, and what new styles are shaping these relationships with cooperatives. This range of diversity is crossed by the changes resulting from the generational replacement. We take the study case of the Union Cooperative of Justiniano Posse in the village of San Marcos, Córdoba province, in core soya area and which has made a demand for a research work on the topic of generational replacement in the organization and in farming activity. The research methodology is then part of on an "action research", especially the diagnostic part. In this way we hve been working with a database created on a reasoned sample of 50 active members of the cooperative in that locality.
</description>
<pubDate>Sat, 01 Jun 2019 00:00:00 GMT</pubDate>
<guid isPermaLink="false">http://sedici.unlp.edu.ar:80/handle/10915/77068</guid>
<dc:date>2019-06-01T00:00:00Z</dc:date>
<dc:description>Esta investigación se refiere a un análisis de las transformaciones de los vínculos entre las cooperativas agropecuarias pampeanas y sus socios, abordando este tema desde una mirada más amplia de transformaciones de las relaciones de “los productores” con “el mundo asociativo” y también con el territorio local y la actividad agropecuaria. El enfoque se centra específicamente sobre los recambios generacionales analizados en las siguientes dimensiones de la actividad agropecuaria: la dimensión privada (las diversidades familiares), la dimensión económica (la diversidad del trabajo) y la dimensión de la vida pública (la diversidad de participación en la cooperativa y otros ámbitos). En un contexto de profundas transformaciones de la actividad agropecuaria y de los territorios rurales, más aún en la zona núcleo pampeana, el objetivo es caracterizar la diversidad de productores vinculados a las cooperativas, sus formas de realizar la actividad agropecuaria y modos de participación, y qué nuevos estilos están adoptando estas relaciones con las cooperativas. Este abanico de diversidades está en efecto atravesado por las transformaciones producidas por los recambios generacionales. Tomamos el caso de la cooperativa Unión de Justiniano Posse de la localidad de San Marcos, en la provincia de Córdoba, situada en plena zona núcleo y que ha formulado una demanda de investigación sobre el tema de los recambios generacionales en la organización y en la actividad agropecuaria. La metodología de la investigación se enmarca entonces en la etapa de diagnóstico de una “investigación acción”. Asimismo, se trabaja con una base de datos elaborada sobre una muestra razonada de 50 miembros activos de esta cooperativa en esa localidad.

This research is based on an analysis of the transformations of the links between the agricultural cooperatives of the pampa region and their members, addressing this topic from the wider perspective of transformation of farmers’ relationship with "the associative world "and also with the local territory and agricultural activity. The focus is specifically on the generational replacement discussed in the following dimensions of farming activity : the private dimension (family diversity), the economic dimension (diversity of work) and the dimension of public life (diversity of the participation in the cooperative, and in other areas). In a context of profound transformations of farming and rural territories, especially in the core soya area of the pampa, the aim is to characterize the diversity of farmers related to cooperatives, their ways of managing farming activity and modes of participation, and what new styles are shaping these relationships with cooperatives. This range of diversity is crossed by the changes resulting from the generational replacement. We take the study case of the Union Cooperative of Justiniano Posse in the village of San Marcos, Córdoba province, in core soya area and which has made a demand for a research work on the topic of generational replacement in the organization and in farming activity. The research methodology is then part of on an "action research", especially the diagnostic part. In this way we hve been working with a database created on a reasoned sample of 50 active members of the cooperative in that locality.</dc:description>
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