Manejos de inverno associado ao pastejo animal: efeito na cultura da soja

Abstract

Different managements in land use have important influences on physical, chemical and biological qualities. The objective of this work was to evaluate different winter managements associated or not with grazing, in the productivity of the soybean crop in succession. The experiment was carried out in a commercial crop in the municipality of São Francisco de Paula - RS. Conducted as a factorial 2 (with and without soil cover in winter) x 2 (with and without trampling + harrowing) in a plot design with five replications each. Four plots were allocated for evaluation with different management practices, one plot without green cover, but with the effect of trampling (T1), a plot with the use of cover crops combined with crop-livestock integration (T2), a plot with the presence of green cover, without the presence of animals (T3) and a fallow plot without cover plant and without the presence of animals (T4). In plots (T1) and (T2) light harrowing was carried out after the end of the grazing period and before planting soybeans. In the summer harvest (2022/2023), the soybean crop was implemented and the average plant height, number of pods, grains per pod and crop productivity were evaluated. The different soil managements contributed with significant interactions regarding plant height, number of pods per plant and number of pods per plant. However, we conclude that in the short term these factors do not interfere with the productivity of the crop. [resumo fornecido pelo autor]