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Neufeldt, HenryZech, W.Thomas, Richard J.[Introduction: sustainable land management for the oxisols of the Brazilian cerrados]Introduction: sustainable land management for the oxisols of the Brazilian cerrados

Little is known about the sustainability of cultivation systems in the Brazilian savannas, also known as the Cerrados, despite its increasing significance for that country`s agriculture. To characterize management effects and follow alterations of organic compounds in different fractions, we stud...


Neufeldt, HenryResck, DVSAyarza, Miguel AngelZech, W.[Soil organic matter in oxisols of the Brazilian cerrados]Soil organic matter in oxisols of the Brazilian cerrados

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

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
Guggenberger, GThomas, Richard J.Zech, W.[Materia orgánica del suelo contenida en las heces que produce una comunidad de lombrices anécico-endógea de un pastizal tropical, en Colombia]Materia orgánica del suelo contenida en las heces que produce una comunidad de lombrices anécico-endógea de un pastizal tropical, en Colombia
Guggenberger, GZech, W.Thomas, Richard J.[Alteración de la lignina y de los carbohidratos en los agregados de un oxisol, en pastizales tropicales derivados de la sabana nativa]Alteración de la lignina y de los carbohidratos en los agregados de un oxisol, en pastizales tropicales derivados de la sabana nativa

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