Densidade de plantas e fornecimento de nitrogênio para a cultivar de feijão-comum superprecoce BRS FC104

Abstract

Brazil is the world’s largest producer of common bean (Phaseolus vulgaris L.) and grain is produced throughout the country. In its cultivation, systems of production with low index of technology use and inputs use predominate, but there is still a portion technified producers. With the launching of super early common bean cultivation BRS FC104 management studies specific for it are needed. The objective of this study is to determine the best density of plants for a cultivation; a responsiveness of the cultivation to seed inoculation with SEMIA 4077, SEMIA 4080 and SEMIA 4088 of Rhizobium tropici strains; and the best time and nitrogen dose that should be applied in coverage for maximum expression of grain yield, other productivity components, grain thickness and grain protein content in 1st and 3rd crop crops. The increase in number of plants per hectare increased grain yield, either with or no inoculation. Seed inoculation with the strains SEMIA 4077, SEMIA 4080 and SEMIA 4088 of Rhizobium tropici did not present satisfactory results for the studied variables. The application of nitrogen under cover is a fundamental practice to obtain gains in grain yield in the 3rd crop. The application of nitrogen in the germination of the seeds reduced the final population of plants.