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Spain, James M.Amézquita Collazos, EdgarRao, Idupulapati M.Ayarza, Miguel AngelBarrios, EdmundoRondón, Marco Antonio[Improving Productivity and Sustainability of Crop-Livestock Systems in Tropical Savannas of South America]Improving Productivity and Sustainability of Crop-Livestock Systems in Tropical Savannas of South America

Castro, AracelyRivera, MarielaFerreira, OscarPavon, JellinGarcía, EdwinAmézquita Collazos, EdgarAyarza, Miguel AngelBarrios, EdmundoRondón, Marco AntonioPauli, NatashaBaltodano, Maria EugeniaMendoza, BismarckÁlvarez Welchez, LuisRubiano, J.Cook, Simon E.Rao, Idupulapati M.[Ecosystem Services from Smallholder Agriculture through Slash and-Mulch Based Agroforestry on Hillsides of Central America]Ecosystem Services from Smallholder Agriculture through Slash and-Mulch Based Agroforestry on Hillsides of Central America

Castro, AracelyRivera, MarielaFerreira, OscarPavon, JellinGarcía, EdwinAmézquita Collazos, EdgarAyarza, Miguel AngelBarrios, EdmundoRondón, Marco AntonioPauli, NatashaBaltodano, Maria EugeniaMendoza, BismarkÁlvarez Welchez, LuisCook, Simon E.Rubiano Mejía, Jorge EliécerJohnson, Nancy L.Rao, Idupulapati M.[Quesungual slash and mulch agroforestry system improves rain water productivity in hillside agroecosystems of the sub‐humid tropics]Quesungual slash and mulch agroforestry system improves rain water productivity in hillside agroecosystems of the sub‐humid tropics

Thomas, Richard J.Ayarza, Miguel Angel[Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality]Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality
Rao, Idupulapati M.Ayarza, Miguel AngelThomas, Richard J.Fisher, Myles J.Sanz Scovino, José IgnacioSpain, James M.Lascano, Carlos E.[Soil-plant factors and processes affecting productivity in ley farming]Soil-plant factors and processes affecting productivity in ley farming
Ayarza, Miguel AngelVilela, LPizarro, Esteban A.Costa, P.H. da[Sistemas agropastoriles basados en leguminosas de usos múltiples]Sistemas agropastoriles basados en leguminosas de usos múltiples

Plant production in the Brazilian savannas, also known as the Cerrados, is limited mainly by low P availability. In tropical soils, rich in sesquioxides, P supply of plants depends heavily on the transformation of organic P by phosphatase enzymes into HPO 4 2- and H 2 PO 4-. We examined two Oxiso...


Renz, TENeufeldt, HenryAyarza, Miguel AngelSilva, J.E. daZech, W.[Acid monophosphatase: an indicator of phosphorus mineralization or of microbial activity? A case study from the Brazilian cerrados]Acid monophosphatase: an indicator of phosphorus mineralization or of microbial activity? A case study from the Brazilian cerrados

We examined whole-soil samples and particle-size fractions to study the distribution of different phosphorus (P) fractions after land-use change from native savanna to crops, pasture, and reforestation on clayey and loamy Oxisols of the Brazilian savannas. Phosphorus was extracted sequentially, a...


Westerhof, RSilva, J.E. daAyarza, Miguel AngelZech, W.[Phosphorus fractions under different land-use systems in oxisols of the Brazilian cerrados]Phosphorus fractions under different land-use systems in oxisols of the Brazilian cerrados

Castro, A.Rivera, M.Ferreira, OscarPavon, J.García, E.Amézquita Collazos, EdgarAyarza, Miguel AngelBarrios, E.Rondón, Marco AntonioPauli, N.Baltodano, Maria EugeniaMendoza, B.Welchez, L.A.Johnson, Nancy L.Rubiano, J.Cook, Simon E.Rao, Idupulapati M.[Improving the efficiency of rain water use on hillsides in the sub-humid tropics: Agricultural and environmental benefits of Quesungual system]Improving the efficiency of rain water use on hillsides in the sub-humid tropics: Agricultural and environmental benefits of Quesungual system

Rivera, M.Castro, A.Pavon, J.Ferreira, OscarPauli, N.Valladares, D.García, E.Amézquita Collazos, EdgarAyarza, Miguel AngelBarrios, E.Rondón, Marco AntonioWelchez, L.A.Rao, Idupulapati M.[Descubriendo los misterios del sistema Quesungual]Descubriendo los misterios del sistema Quesungual

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