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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
Thomas, Richard J.Rondón, Marco AntonioAmézquita Collazos, EdgarAyarza, Miguel AngelAsakawa, N.Friesen, Dennis K.[Overcoming soil constraints in Latin American Savannas: new approaches and potential trade-offs]Overcoming soil constraints in Latin American Savannas: new approaches and potential trade-offs
Ayarza, Miguel AngelVilela, LPizarro, Esteban A.Costa, P.H. da[Agropastoral systems based on multiple-purpose legumes]Agropastoral systems based on multiple-purpose legumes
Lopes, AAyarza, Miguel AngelThomas, Richard J.[Managing and conserving acid savanna soils for agricultural development: lessons from the Brazilian Cerrados]Managing and conserving acid savanna soils for agricultural development: lessons from the Brazilian Cerrados

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