Rendimento de grãos do feijão sob diferentes doses de nitrogênio e inoculação de Rhizobium tropici

Abstract

Bean culture is present in all Brazilian regions and is grown in the most diverse production systems. For many years the exploitation was essentially carried out by family farming, which was responsible for a significant portion in the production of beans for a long time. However, in recent years, the crop has attracted the interest of more technical farmers, due to the high profitability that this can provide. These changes in producer standards have increasingly demanded technologies for beans. Some measures can be taken to favor the crop, without the need to make large investments, such as inoculation with bacteria fixing nitrogen, which is the element required in greater quantity by the plant. In this way, the present study sought to evaluate the bean responses to inoculant application and nitrogen doses. For that, the components of yield, number of pods per plant (NVP), number of grains per pod (NGV), number of grains per plant (NGP), mass of a thousand grains (MMG) and yield (REND) were evaluated. The results obtained demonstrate that the inoculation with Rhizobium tropici was sufficient to obtain similar results in the yield to fertilization with up to 80 kg ha-1 of N. The cultivars BRS Campeiro and Pérola responded as to the different nitrogen doses, the other cultivars did not present difference Significant. The components, number of pods per plant, number of grains per pod and number of grains per plant did not respond to treatments, differing only among cultivars.