Políticas para promover una ampliación de la cobertura del sistema de pensiones en Colombia

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Seguros de desempleo, objetivos, características y situación en América Latina

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Acceso al crédito bancario de las microempresas chilenas: lecciones de la década de los noventa

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Inserción laboral desventajosa y desigualdades de cobertura previsional: la situación de las mujeres

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Opciones de la banca de desarrollo en Chile: el convidado de piedra" del sistema financiero chileno"

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Microfinanzas rurales: experiencias y lecciones para América Latina

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Protección social efectiva, calidad de la cobertura, equidad y efectos distributivos del sistema de pensiones en Chile

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Perspectivas previsionales en Argentina y su financiamiento tras la expansión de la cobertura

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Ampliación de la cobertura de microfinanzas en el área rural del Estado Plurinacional de Bolivia: un diagnóstico cualitativo de los esfuerzos actuales y desafíos

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¿Existe un modelo de microfinanzas en América Latina?

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Influência da cobertura de aveia-preta e milheto sobre comunidade de plantas daninhas e produção de soja

The success in weed control by using straw depends on the management time, straw quality and quantity. The objective of this research was to evaluate the suppressor effect of black-oats and millet straw cover on the incidence of weeds and on the productivity of the soybean crop. The experiment was carried out during the years 2006 and 2007, in an area from the Farm of Education, Research and Production of FCAV-UNESP, Jaboticabal Campus, in a completely randomized block design, with four replications. Treatments consisted of different types of black oats and pearl millet straw management before soybean seeding (without management, obtained by machine cut, desiccated using glyphosate desiccation and with paraquat) and different periods of straw deposition (0, 15, 30 e 60 days before soybean seeding). The weed population and the characteristics of soybean growth and production were evaluated. The deposition of black oats and pearl millet straw provided reductions in weed density and dry mass, and this effect was more effective when the deposition occurred until 15 days prior to soybean seeding. The suppressor effect of black oats straw was more pronounced than that of pearl millet straw, regardless of the drying method, although the millet had a greater dry matter production. No significant differences were found between the drying methods and the straw effectiveness.

Fontes e parcelamento do nitrogênio em cobertura, na cultura do milho sob plantio direto

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Flexiguridad con informalidad: opciones y restricciones

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México: las dimensiones de la flexiguridad laboral

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Determinação da massa seca, teor de nutrientes e cobertura do solo de espécies semeadas no outono-inverno

Culture options for the autumn-winter season are a major problem for production systems under low rainfall. The aim of this study was to evaluate the effect of the sowing season on dry matter yield, nutrient content of the shoot and soil covering percentage of coverage plants on the soil on the intercrop: grain sorghum, rattlepods, pearl millet brachiaria grass and an area with weeds (fallow). The experiment was conducted under field conditions on an Oxisol (Haplustox), clay texture, in Selvíria, Mato Grosso do Sul, Brazil. The experimental design was a randomized block design with eight replications, two sowing seasons and five coverage treatments. When the sorghum culture of the first sowing season reached the harvest stage, the dry matter yield on the other treatments was evaluated. Results showed that sowing in March results in higher dry mass yield and higher soil coverage percentage in the studied species. In the first sowing season, Brachiaria brizantha presents higher dry matter yield and macronutrients extraction.