Uso de bactérias promotoras de crescimento e micorrizas no crescimento radicular e produtividade da soja

Abstract

Soybean (*Glycine max*) is one of Brazil's major agricultural crops, holding significant economic and productive importance. Among the strategies to enhance crop development, the use of microorganisms capable of promoting plant growth and improving the utilization of soil resources stands out. In this context, this study aimed to evaluate the effect of different microbial inoculation treatments on soybean growth and yield performance. The study was conducted in two stages. In the first stage, carried out using outdoor PVC pipes, root volume and the dry mass of both roots and shoots were evaluated. In the second stage, conducted in the field, chlorophyll A and B contents were determined, along with the number of pods per plant, number of grains per plant, plant height, thousand-grain mass, and yield. The data obtained were subjected to analysis of variance (ANOVA), and treatment means were compared using the Scott-Knott test at a 5% probability level, utilizing RBio software. In the PVC pipe trials, some treatments showed higher mean values for traits related to root development and dry mass accumulation. Higher means were also observed in the field for certain yield components, particularly the number of grains and pods per plant. However, statistical analysis revealed no significant differences among treatments for the variables evaluated in either stage of the study. Thus, under the experimental conditions tested, the microbial treatments did not produce significant effects on soybean growth, physiological parameters, or yield performance.