USO DE Bacillus megatherium PARA SOLUBILIZAÇÃO DE FÓSFORO NA CULTURA DA SOJA

Abstract

To increase soybean productivity in the cerrado, phosphorus-solubilizing microorganisms are being used as an alternative to improve the efficiency of phosphorus use in the soil, making it available to plants. In this study, the addition of phosphorus-solubilizing bacteria (Bacillus megaterium) can contribute to greater phosphorus availability and enhanced crop growth, as these bacteria also act as plant growth promoters. The treatments implemented in this study were: T1 = no phosphorus supply and no Bacillus megaterium inoculation; T2 = only phosphorus supply and no Bacillus megaterium inoculation; T3 = no phosphorus supply and inoculated with Bacillus megaterium; T4 = with recommended phosphorus supply and inoculated with Bacillus megaterium in soybeans. The response variables analyzed were: shoot fresh weight, root fresh weight, diameter, height, and number of pods. Root fresh weight had greater weight when the treatments received phosphorus fertilization. Soybeans had a greater height in cm, a greater diameter in mm and more pod units when fertilized with phosphorus and inoculated with Bacillus megaterium, making the association of fertilization with the biological inoculant favorable on the productive response of soybeans.