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Journal Article 2000

Autor: Neufeldt, Henry Silva, J.E. da Ayarza, Miguel Angel Zech, W.

Differently managed oxisols from Central Brazil were studied using a sequential P fractionation procedure because the effects of land use on the distribution of P forms in these soils are barely known. Therefore levels of labile and recalcitrant P forms in the natural Cerrado savanna were compare...

Enlace original: https://cgspace.cgiar.org/handle/10568/43630

Investigación en Agricultura
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Neufeldt, Henry ,  Silva, J.E. da ,  Ayarza, Miguel Angel ,  Zech, W. ,  [Land-use effects on phosphorus fractions in cerrado oxisols] ,  Land-use effects on phosphorus fractions in cerrado oxisols
Book Chapter 1992

Autor: Rao, Idupulapati M. Ayarza, Miguel Angel Thomas, Richard J. Fisher, Myles J. Sanz Scovino, José Ignacio Spain, James M. Lascano, Carlos E.
Enlace original: https://cgspace.cgiar.org/handle/10568/55065

Investigación en Agricultura
Enlace permanente
Rao, Idupulapati M. ,  Ayarza, Miguel Angel ,  Thomas, Richard J. ,  Fisher, Myles J. ,  Sanz Scovino, José Ignacio ,  Spain, 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
Book Chapter 1999

Autor: Renz, TE Neufeldt, Henry Ayarza, Miguel Angel Silva, J.E. da Zech, W.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/55137

Investigación en Agricultura
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Renz, TE ,  Neufeldt, Henry ,  Ayarza, Miguel Angel ,  Silva, J.E. da ,  Zech, 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
Book Chapter 1999

Autor: Westerhof, R Silva, J.E. da Ayarza, Miguel Angel Zech, W.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/55135

Investigación en Agricultura
Enlace permanente
Westerhof, R ,  Silva, J.E. da ,  Ayarza, Miguel Angel ,  Zech, 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
Book Chapter 2004

Autor: Thomas, Richard J. Rondón, Marco Antonio Amézquita Collazos, Edgar Ayarza, Miguel Angel Asakawa, N. Friesen, Dennis K.
Enlace original: https://cgspace.cgiar.org/handle/10568/55374

Investigación en Agricultura
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Thomas, Richard J. ,  Rondón, Marco Antonio ,  Amézquita Collazos, Edgar ,  Ayarza, Miguel Angel ,  Asakawa, 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

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