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The effects of land-use change on the structure of Oxisols in the Brazilian savannas (also known as the Cerrados) are still insufficiently understood. We therefore studied loamy and clayey Oxisols under natural savanna, crop, pasture, and reforestation to (1) quantify management-induced changes i...


Neufeldt, HenryAyarza, Miguel AngelResck, DVSZech, W.[Distribution of water-stable aggregates and aggregating agents in oxisols of the Brazilian cerrados]Distribution of water-stable aggregates and aggregating agents in oxisols of the Brazilian cerrados
Fisher, Myles J.Rao, Idupulapati M.Lascano, Carlos E.Thomas, Richard J.Vera, Raúl R.Ayarza, Miguel Angel[Pasture soils as carbon sink]Pasture soils as carbon sink

Low phosphorus (P) supply is a major limitation of forage production in acid soils of the tropics. A glasshouse experiment was conducted to determine the differences in P acquisition and utilization among three legumes (Arachis pintoi, Stylosanthes capitata and Centrosema acutifolium) and one gra...


Rao, Idupulapati M.Borrero, V.Ricaurte Oyola, José JaumerGarcía, RamiroAyarza, Miguel Angel[Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type]Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type
Herrera, P.Ayarza, Miguel AngelRao, Idupulapati M.Amézquita Collazos, Edgar[Efecto de las pasturas mejoradas y de su rotación con cultivos de arroz, sobre algunas de las propiedades físicas de un suelo de la altillanura colombiana]Efecto de las pasturas mejoradas y de su rotación con cultivos de arroz, sobre algunas de las propiedades físicas de un suelo de la altillanura colombiana
Rao, Idupulapati M.Ayarza, Miguel AngelGarcía, Ramiro[Adaptive attributes of tropical forage species to acid soils I. Differences in plant growth, nutrient acquisition and nutrient utilization among C4 grasses and C3 legumes]Adaptive attributes of tropical forage species to acid soils I. Differences in plant growth, nutrient acquisition and nutrient utilization among C4 grasses and C3 legumes

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
Castro, AracelyPoveda, OscarGarcía, EdwinPavón Tijerino, Jellin del CarmenAyarza, Miguel AngelRao, Idupulapati M.[Farmer-to-farmer dissemination of alternative to slash and burn agriculture (round 2)]Farmer-to-farmer dissemination of alternative to slash and burn agriculture (round 2)
Jiménez Jaén, J.J.Barrios, E.Ayarza, Miguel AngelLavelle, Patrick M.Decaëns, Thibaud[Harnessing the biological plows of the soil: soil macrofauna communities]Harnessing the biological plows of the soil: soil macrofauna communities
Rao, Idupulapati M.Barrios, E.Oberson, AstridAyarza, Miguel AngelFriesen, Dennis K.[Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems]Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems
Ayarza, Miguel AngelBeltrán Giraldo, Jorge AlonsoBarrios, E.[Farm nutrient recycling through double purpose live barriers]Farm nutrient recycling through double purpose live barriers

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