EFEITO DE MICRORGANISMOS PROMOTORES DE CRESCIMENTO NO DESENVOLVIMENTO RADICULAR DO FEIJÃO-COMUM: influência da inoculação microbiana sobre parâmetros do sistema radicular

Abstract

The use of plant growth-promoting microorganisms (PGPM) is a sustainable alternative for agronomic growth. This study aimed to analyze the influence of microbial inoculation on the development of the root system of common bean (Phaseolus vulgaris L., cultivar FC 402). The research was conducted at Embrapa Rice and Beans in a completely randomized design, with five treatments and ten replications. Thespecies Serratia marcescens, Bacillus sp., Azospirillum brasilense, and Trichoderma koningiopsis were evaluated, applied individually and in co-inoculation. The results showed that the treatments with Azospirillum brasilense and Trichoderma koningiopsis provided the highest values of length, surface area, and root volume. These parameters indicate a superior potential of these microorganisms in promoting nutrient absorption. It is concluded that inoculation with specific PGPM is an effective and sustainable agricultural practice, capable of reducing the dependence on chemical fertilizers and inducing greater vigor in the root system of common beans.