CICLAGEM DE NUTRIENTES NA BIOMASSA DE FORRAGEIRAS TROPICAIS APÓS O CONSÓCIO COM MILHO PARA A PRODUTIVIDADE DA SOJA

Abstract

The consortium of the annual crop with tropical forages aiming to produce biomass for the direct planting system is considered a promising option for crop diversity and increased soybean productivity. Therefore, the objective was to evaluate nutrient cycling in the biomass of forages of the genus Panicum maximum after intercropping with corn for soybean productivity. The experiment was conducted in a randomized block design with four replications. The treatments consisted of soil cover biomass: corn monoculture, tamani grass in monoculture, zuri grass in monoculture, corn + tamani grass in the row, corn + tamani grass between the rows, corn + zuri grass in the row and corn + zuri grass between the lines. In addition to an additional soybean treatment without cover biomass. The results showed that zuri grass in monoculture and intercropped in both forms of sowing provided greater nutrient cycling, however, both forages can be recommended as cover crops as they have a positive influence on the agronomic characteristics and productivity of soybeans. Systems integrated with tropical forages for soil cover proved to be an efficient technique for nutrient cycling, through greater use of soil nutrients and contributing to the sustainability of agricultural systems.