Consórcio brachiaria com soja em sucessão ao sorgo e seus efeitos na produtividade

Abstract

Tropical agriculture is dependent on organic matter derived from crop residues or cover plants. In this context, the intercropping of soybean with Urochloa aims to increase organic matter through straw residues, enhancing soil moisture and providing favorable conditions for the second crop grown under rainfed conditions. Thus, the research hypothesis is that Urochloa sowing methods interfere with soybean productivity. The objective of the study was to investigate soybean sowing methods and their effects on soybean yield. The experiment was arranged in a randomized complete block design with four replications. Treatments consisted of different forage sowing methods (control without forage; broadcast sowing at the time of soybean sowing; sowing in the fertilizer box simultaneously with soybean; and broadcast sowing of the forage at the R7.3 growth stage), totaling 16 plots of 9 m² (3 × 3 m). During the study, plant height, number of branches, number of stem nodes, number of pods, 100-grain weight, and soybean yield were evaluated. The results showed that the number of branches and stem nodes were higher in the control treatment. The number of pods and yield were higher when sowing was performed in the fertilizer box. It is concluded that sowing Urochloa in the fertilizer box increased soybean productivity.