Co-inoculação e modos de aplicação de Bradyrhizobium japonicum e Azospirillum brasilense associado à aplicação de CoMo na cultura da soja

Abstract

Co-inoculation between bacteria of the genus Bradyrhizobium and Azospirillum can enhance the nodulation and greater development of the soybean root system, contributing to an increase in grain yield, in addition to reducing the contamination of natural resources caused by mineral fertilization and production costs. The use of molybdenum (Mo) and cobalt (Co) in soybean crops can also favor biological nitrogen fixation. The objective of this work was to evaluate the effect of co-inoculation of bacteria associated with CoMo application in soybean crop. The experimental design will be randomized blocks in split plots, with four replications. The plots were constituted by the presence and absence of CoMo and the subplots by the different modes of application and doses. The inoculation of Bradyrhizobium japonicum associated with the application of Azospirillum brasilense via foliar and CoMo, provided increments for the variables first pod insertion height, number of pods per plant, number of grains per plant and mass of one hundred grains, reflecting increases in the soybean production.