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Corporación Colombiana de Investigación AgropecuariaInternational Center for Tropical Agriculture[Guía resumen de la actual investigación agropecuaria por programas en el C.I. Carimagua (altillanura) para las sabanas ácidas tropicales]Guía resumen de la actual investigación agropecuaria por programas en el C.I. Carimagua (altillanura) para las sabanas ácidas tropicales

The sustainability of nutrient transfers in integrated rangeland/cropland systems of the Sahel was examined in relation to the impact of livestock. Rangeland nutrient balances are considered in equilibrium whereas croplands lack the internal capacity to replenish nutrient off takes in grain and c...


Powell, J.M.Fernández Rivera, S.Hiernaux, Pierre H.Y.Turner, M.[Nutrient cycling in integrated rangeland/cropland systems of the Sahel]Nutrient cycling in integrated rangeland/cropland systems of the Sahel
Thomas, Richard J.[Requerimientos de Rhizobium, fijación de nitrógeno y reciclaje de nutrimentos en Arachis forrajero]Requerimientos de Rhizobium, fijación de nitrógeno y reciclaje de nutrimentos en Arachis forrajero

Earthworms are considered soil ecosystem engineers that play an important role in soil organic matter dynamics and physical structure. Due to both their size and activities these organisms can accelerate the decomposition and mineralization of organic matter by reducing the size of residues to pa...


Jiménez Jaén, J.J.Cepeda, AFriesen, Dennis K.Decaëns, ThibaudOberson, Astrid[Phosphorus availability in casts of an anecic savanna earthworms in Colombian oxisol]Phosphorus availability in casts of an anecic savanna earthworms in Colombian oxisol
Thomas, Richard J.[Rhizobium requirements, nitrogen fixation, and nutrient cycling in forage Arachis]Rhizobium requirements, nitrogen fixation, and nutrient cycling in forage Arachis

De acuerdo con las demográficas actuales, se prevé que la población en América tropical se duplicara en los próximos 25 años; como consecuencia, habrá mayor demanda de carne y leche, la cual podrá satisfacerse solo aumentando la producción agropecuaria. Estos factores aumentaran la presión sobre ...


Ayarza, Miguel AngelRao, Idupulapati M.Thomas, Richard J.[Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos]Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos

Developing countries continue to face the challenge of increasing poverty and depleting asset base of their predominantly rural populations. In sub-Saharan Africa (SSA) alone, over 70% of the population now live below the poverty line, and in South Asia the number of poor people exceeds 500 milli...


Kebreab, E.Smith, T.Tanner, J.C.Osuji, P.O.[Review of undernutrition in smallholder ruminant production systems in the tropics]Review of undernutrition in smallholder ruminant production systems in the tropics

This document summarises the major discussions, findings and recommendations of the conference convened by ILCA and its cosponsors to bring together national and international experts in livestock nutrition and management, ecology, agronomy, soil science and socio-economics to address fundamental...


Powell, J.M.Fernández Rivera, S.Williams, Timothy O.Renard, C.[Livestock and sustainable nutrient cycling in mixed farming systems of sub-Saharan Africa. Volume I: Conference summary]Livestock and sustainable nutrient cycling in mixed farming systems of sub-Saharan Africa. Volume I: Conference summary

Night corralling of livestock directly in crop fields during the dry season contributes to nutrient cycling for the benefit of crops. Rangeland grazing and corralling livestock on selected croplands result in a spatial transfer of organic matter and nutrients from rangelands to the corralling sit...


Hiernaux, Pierre H.Y.Fernández Rivera, S.Schlecht, E.Turner, M.Williams, Timothy O.[Livestock-mediated nutrient transfers in Sahelian agro-ecosystems]Livestock-mediated nutrient transfers in Sahelian agro-ecosystems

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