The intensive use of Cerrado soils for agricultural production coupled with an inadequate management has resulted in soil degradation. This created the need for the introduction of more sustainable systems such as no-tillage and crop-livestock integration. This study analyzed the effect of succession of corn+forage and soybean on soil physical properties. For this purpose, four forages (Brachiaria brizantha, B. ruziziensis, Panicum maximum cv. Tanzânia, and P. maximum cv. Áries), were sown in an intercropping trial with maize in three modalities […]

Nitrogen is the main limiting factor in crop productivity and thereby soil management systems may change the mineralization and nitrification rates. In an experiment on soil management systems implemented in 1988 at the experimental station Fundação ABC, Ponta Grossa, in the central South region of the State of Paraná, inorganic N dynamics were examined to find a soil management strategy with a view to a sustainable environment. The objective of this study was to calculate the net mineralization and nitrification […]

The performance of no-tillage systems depends, among other factors, on the quantity and quality of residues added to the soil. In Southern Brazil, the main cover crop anteceding summer crops is black oat (Avena strigosa, Schieb). The growth of this grass is often limited by N deficiency. In this situation, nitrogen fertilization is a possible option to increase the efficiency of this cover crop in no-tillage systems. Main goal of this study was the evaluation of effects of N rates […]