Indicadores de qualidade do solo e produtividade de soja em sistema integrado de produção agropecuária

Abstract

The crop-livestock integration in no-tillage system (CLI-NTS) have emerged as a proposal of conservationist production that promote improvements in soil attributes and, consequently, an increase in crop productivity. Thus, the objective of this study was to evaluate the contribution of between grasses and legumes in the pasture phase on the chemical and biochemical attributes in CLI-NTS at the Mato Grosso and the performance of the soybean crop in succession. The soybean crop was sown in the summer with harvest in February, with subsequent insertion of the treatments with two grasses gramíneas (Urochloa ruziziensis e U. brizantha cv. BRS Paiaguás) Cultivated single or intercropped with cowpea beans (Vigna unguiculata) cv. BRS Tumucumaque and with pigeon peas (Cajanus cajan) cv. BRS Mandarim. With the use of legumes, there was an increase in the total N stocks in the pasture stage, also observed for the carbon and nitrogen of the microbial biomass and β-glucosidase demonstrating that the pasture phase consortia decrease the stress conditions that the biomass undergoes. These results culminated in the higher productivity of soybean in the treatments with consortium between grasses and legumes, mainly with the use of cowpea beans, in pasture phase in CLI-NTS promotes improvements in soil attributes and increases soybean accumulated productivity after two years of system deployment.