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Amézquita Collazos, Edgar ,  Rao, Idupulapati M. ,  Rondón, Marco Antonio ,  Ayarza, Miguel Angel ,  Hoyos, P. ,  Molina, DL ,  Corrales, I.I. ,  [Mejoramiento de oxisoles de baja fertilidad para sistemas agropastoriles de alta productividad en sabanas tropicales de Colombia] ,  Mejoramiento de oxisoles de baja fertilidad para sistemas agropastoriles de alta productividad en sabanas tropicales de Colombia

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

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

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

Friesen, Dennis K. ,  Ayarza, Miguel Angel ,  Thomas, Richard J. ,  Amézquita Collazos, Edgar ,  Sanz Scovino, José Ignacio ,  [Strategic systems research for the Latin American savannas] ,  Strategic systems research for the Latin American savannas

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] ,  Microbial biomass, microbial activity, and carbon pools under different land-use systems in the Brazilian cerrados

Lopes, A ,  Ayarza, Miguel Angel ,  Thomas, Richard J. ,  [Sistemas agropastoriles en las sabanas de América Tropical: lecciones del desarrollo agrícola de los Cerrados de Brasil] ,  Sistemas agropastoriles en las sabanas de América Tropical: lecciones del desarrollo agrícola de los Cerrados de Brasil

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] ,  Short-term variation in aggregation and particulate organic matter under crops and pastures

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] ,  Phosphorus pools in bulk soil and aggregates of differently textured oxisols under different land-use systems in the Brazilian cerrados