Componentes de rendimento e produtividade do feijoeiro comum submetido à inoculação e co-inoculação com estirpes de Rhizobium tropici e Azospirillum brasilense

Abstract

Common-bean is one of the most common food to Brazilian people being cultivated in several regions of the country. Thereby, the aim of this work was to evaluate the influence of inoculation and co-inoculation with bacteria of the genus Rhizobium and Azospirillum on yield components and grain yield of common bean. The experiment was set up in the 2015/2016 harvest season. With four treatments: T1= Control (without inoculation); T2= Inoculation with Rhizobium tropici; T3= Inoculation with Azospirillum brasilense e T4= co-inoculation with Rhizobium tropici + Azospirillum brasilense. Thus, the experiment consisted in a randomized complete block design with five replications. There were evaluated plant height (cm), stem diameter (cm), number of pods per plant, number of grains per pod, mass of 100 grains (g) and yield (kg ha-1). The results showed that all treatments that received inoculation, independent of the utilized microorganism, had increased plant high and the number of pods per plant in relation to the control. The co-inoculation with Rhizobium tropici + Azospirillum brasilense showed both the highest mass of 1000 grains (253,36 g) and yield (2448,45 kg ha-1).