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Journal Article 1999

Autor: Lilienfein, J Wilcke, W. Ayarza, Miguel Angel Lima, SC Vilela, L Zech, W.

Sustainable land use in periodically dry Brazilian savannas requires a water-saving management. We hypothesized that the annual course of matric potentials (?M) in very-fine, isohyperthermic Anionic Acrustoxes of Pinus plantations (PI), degraded (DP) and productive pastures (PP), no-till (NT) and...

Enlace original: https://cgspace.cgiar.org/handle/10568/43185

Investigación en Agricultura
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Lilienfein, J ,  Wilcke, W. ,  Ayarza, Miguel Angel ,  Lima, SC ,  Vilela, L ,  Zech, W. ,  [Annual course of matric potential in differently used savanna oxisols in Brazil] ,  Annual course of matric potential in differently used savanna oxisols in Brazil
Journal Article 2009

Autor: Marchao, RL Lavelle, Patrick M. Celini, L Balbino, LC Vilela, L Becquer, T

The objective of this work was to assess the effects of integrated crop-livestock systems, associated with two tillage and two fertilization regimes, on the abundance and diversity of the soil macrofauna. Four different management systems were studied: continuous pasture (mixed grass); continuous...

Enlace original: https://cgspace.cgiar.org/handle/10568/44112

Investigación en Agricultura
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Marchao, RL ,  Lavelle, Patrick M. ,  Celini, L ,  Balbino, LC ,  Vilela, L ,  Becquer, T ,  [Soil macrofauna under integrated crop-livestock systems in a Brazilian Cerrado Ferralsol] ,  Soil macrofauna under integrated crop-livestock systems in a Brazilian Cerrado Ferralsol
Journal Article 2003

Autor: Lilienfein, J Wilcke, W. Vilela, L Ayarza, Miguel Angel Carmo Lima, S. do Zech, W.

In the Brazilian savanna, there is a risk that soil fertility of pastures declines to a level below that of the native savanna because of low fertilizer application. To evaluate biophysical pasture sustainability we compared regularly fertilized productive pasture (PP), degraded pasture fertilize...

Enlace original: https://cgspace.cgiar.org/handle/10568/44110

Investigación en Agricultura
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Lilienfein, J ,  Wilcke, W. ,  Vilela, L ,  Ayarza, Miguel Angel ,  Carmo Lima, S. do ,  Zech, W. ,  [Soil fertility under native cerrado and pasture in the Brazilian savanna] ,  Soil fertility under native cerrado and pasture in the Brazilian savanna
Book Chapter 1999

Autor: Westerhof, R Vilela, L Ayarza, Miguel Angel Zech, W.

The effect of land use on the availability of soil nitrogen (N) was studied by separating total soil N into one labile and one stable fraction by oxidation and extraction of labile N with potassium permanganate. The nitrogen management index (NMI) was calculated according to Blair et al. (1995) f...

Enlace original: https://cgspace.cgiar.org/handle/10568/55133

Investigación en Agricultura
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Westerhof, R ,  Vilela, L ,  Ayarza, Miguel Angel ,  Zech, W. ,  [Labile N and the nitrogen management index of oxisols in the Brazilian cerrados] ,  Labile N and the nitrogen management index of oxisols in the Brazilian cerrados
Book Chapter 1999

Autor: Westerhof, R Buurman, P Griethuysen, C. van Ayarza, Miguel Angel Vilela, L Zech, W.

In the Cerrados, a large savanna region in Brazil, the effects of different land use on aggregation in Oxisols were studied, using laser diffraction grain-size analyses. The topsoil of plowed systems had significantly fewer macroaggregates (194-2000 micro m) and a significantly larger fraction of...

Enlace original: https://cgspace.cgiar.org/handle/10568/55128

Investigación en Agricultura
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Westerhof, R ,  Buurman, P ,  Griethuysen, C. van ,  Ayarza, Miguel Angel ,  Vilela, L ,  Zech, W. ,  [Aggregation studied by laser diffraction in relation to plowing, soil organic matter, and lime in the Brazilian cerrados] ,  Aggregation studied by laser diffraction in relation to plowing, soil organic matter, and lime in the Brazilian cerrados
Book Chapter 1999

Autor: Westerhof, R Vilela, L Ayarza, Miguel Angel Zech, W.

The permanganate oxidation procedure is easily performed and may help monitor large areas for their soil organic matter (SOM) quality and nitrogen (N) availability. Knowledge of the chemical characteristics of fractions that are lost or remain after oxidation will help explain results obtained by...

Enlace original: https://cgspace.cgiar.org/handle/10568/55134

Investigación en Agricultura
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Westerhof, R ,  Vilela, L ,  Ayarza, Miguel Angel ,  Zech, W. ,  [Characterization labile and stable nitrogen] ,  Characterization labile and stable nitrogen
Book Chapter 1999

Autor: Westerhof, R Vilela, L Ayarza, Miguel Angel Zech, W.

Soil organic matter quality is usually seen as a major attribute of soil quality. In this study, we extracted organic carbon with water (WEOC) or with potassium permanganate (PEOC). We assessed these extractions for their potential as sensitive indicators of the effect of land use on two importan...

Enlace original: https://cgspace.cgiar.org/handle/10568/55132

Investigación en Agricultura
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Westerhof, R ,  Vilela, L ,  Ayarza, Miguel Angel ,  Zech, W. ,  [Carbon fractions as sensitive indicators of quality of soil organic matter] ,  Carbon fractions as sensitive indicators of quality of soil organic matter
Journal Article 1998

Autor: Westerhof, R Vilela, L Ayarza, Miguel Angel Zech, W.

The effect of land use on the availability of nitrogen (N) was studied by separating total N into a labile and a stable fraction by oxidation and extraction of labile N with KMnO4. The nitrogen management index (NMI) was calculated following the method of Blair et al. (1995) for the carbon manage...

Enlace original: https://cgspace.cgiar.org/handle/10568/43628

Investigación en Agricultura
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Westerhof, R ,  Vilela, L ,  Ayarza, Miguel Angel ,  Zech, W. ,  [Land use effects on labile N extracted with permanganate and the nitrogen management index in the Cerrado region of Brazil] ,  Land use effects on labile N extracted with permanganate and the nitrogen management index in the Cerrado region of Brazil
Conference Paper 1992

Autor: Leite, GG Spain, James M. Vilela, L Gomide, CCC Rocha, C.M.C. da
Enlace original: https://cgspace.cgiar.org/handle/10568/55740

Investigación en Agricultura
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Leite, GG ,  Spain, James M. ,  Vilela, L ,  Gomide, CCC ,  Rocha, C.M.C. da ,  [Efeito de sistemas de pastejo sobre a produtividade de pastagens consorciadas nos Cerrados do Brasil] ,  Efeito de sistemas de pastejo sobre a produtividade de pastagens consorciadas nos Cerrados do Brasil
Book Chapter 1999

Autor: Ayarza, Miguel Angel Vilela, L Pizarro, Esteban A. Costa, P.H. da
Enlace original: https://cgspace.cgiar.org/handle/10568/55110

Investigación en Agricultura
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Ayarza, Miguel Angel ,  Vilela, L ,  Pizarro, Esteban A. ,  Costa, P.H. da ,  [Sistemas agropastoriles basados en leguminosas de usos múltiples] ,  Sistemas agropastoriles basados en leguminosas de usos múltiples

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