Efeito da inoculação e coinoculação na produtividade da cultura da soja na regi- ão de Belterra - PA

Abstract

Soybean has great importance due to its diversified use, thus, its demand has been growing in recent decades, consequently boosting research for techniques seeking greater efficiency and productivity. Its great nutritional demand for nitrogen makes inoculation an economically essential practice due to biological nitrogen fixation, being generally performed with bacteria of the genus Bradyrhizobium, and can also be performed with other bacteria. The objective of the present work was to evaluate the efficiency and feasibility of inoculation and co-inoculation techniques with Bradyrhizobium japonicum and Azospirillum brasiliense via seed treatment using commercial products from the company Lallemand, namely Starfix (B. japonicum) and Azos (Azos). brazilian). The experimental design used was completely randomized (DIC) containing four treatments with four replications. The treatments consisted of the control, inoculation with B. japonicum, with A. brasilense and co-inoculation with B. japonicum and A. brasilense. The parameters evaluated after harvest were thousand grain weight, total grain weight and grain yield. The data were evaluated by the Tukey test at 5% probability, where the results obtained showed that all treatments were numerically superior to the control, however, there were no statistically significant differences in the evaluated variables.