In the Brazilian savannas, or Cerrados the rapid advance in agriculture and cattle ranching is affecting soils through, for example, accelerated erosion and depletion of soil organic matter (SOM). Changes in soil microbial biomass are good indicators of changes in SOM. We therefore assessed the e...
Renz, TE
,
Neufeldt, Henry
,
Ayarza, Miguel Angel
,
Resck, DVS
,
Zech, W.
,
[Microbial biomass, microbial activity, and carbon pools under different land-use systems in the Brazilian cerrados]
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Microbial biomass, microbial activity, and carbon pools under different land-use systems in the Brazilian cerrados
This study assessed the influence of land use (continuous cropping, CC; tree plantations, F; pasture, PG; and native savanna, NS) on P concentrations and partitioning in bulk soil and two aggregate size fractions of two Oxisols, one loamy and one clayey. The quantity and quality of physically pro...
Lilienfein, J
,
Wilcke, W.
,
Neufeldt, Henry
,
Ayarza, Miguel Angel
,
Zech, W.
,
[Phosphorus pools in bulk soil and aggregates of differently textured oxisols under different land-use systems in the Brazilian cerrados]
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Phosphorus pools in bulk soil and aggregates of differently textured oxisols under different land-use systems in 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, Henry
,
Resck, DVS
,
Ayarza, Miguel Angel
,
Zech, W.
,
[Soil organic matter in oxisols of the Brazilian cerrados]
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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, Henry
,
Ayarza, Miguel Angel
,
Resck, DVS
,
Zech, W.
,
[Distribution of water-stable aggregates and aggregating agents in oxisols of the Brazilian cerrados]
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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, 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]
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Acid monophosphatase: an indicator of phosphorus mineralization or of microbial activity? A case study from the Brazilian cerrados