Intensive farming and grazing on Oxisols of the Brazilian savannas (also known as the Cerrados) are leading to loss of soil organic matter (SOM) and consequently to a decline in fertility and sustainability of the soils. Alternative land-use systems such as the introduction of legumes in pastures...
Fuhrmann, S
,
Neudelft, H
,
Westerhof, R
,
Ayarza, Miguel Angel
,
Silva, J.E. da
,
Zech, W.
,
[Soil organic carbon, carbohydrates, amino sugars, and potentially mineralizable nitrogen under different land-use systems in oxisols of the Brazilian cerrados]
,
Soil organic carbon, carbohydrates, amino sugars, and potentially mineralizable nitrogen under different land-use systems in oxisols of the Brazilian cerrados
Short-term changes in soil aggregation, total and particulate organic C and N were studied in cropping and pasture systems of the Brazilian savannas, also known as the Cerrados. Furthermore, the concepts of a hierarchical aggregate structure and of the interaction of soil structure with particula...
Freibauer, A.
,
Westerhof, R
,
Ayarza, Miguel Angel
,
Silva, J.E. da
,
Zech, W.
,
[Short-term variation in aggregation and particulate organic matter under crops and pastures]
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Short-term variation in aggregation and particulate organic matter under crops and pastures
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, 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
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, 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