Avaliação das cepas Bacillus subtillis (CNPMS B2084 (BRM 034840)) e Bacillus megaterium (CNPMS B119 (BRM 033112)) na promoção do crescimento e na produtividade da soja

Abstract

The use of phosphate solubilizing microorganisms has been increasing, aiming at increasing agricultural production and the rational use of the planet's natural resources. In this sense, this study aimed to evaluate the effect of the commercial product Biomaphos®, based on phosphate solubilizing microorganisms, in promoting plant growth and soybean grain production. The study was conducted in the municipality of Mineiros-GO, in the 2020/2021 harvest period. Using three treatments with four repetitions, being the control (T1), the application of the product in the planting furrow (T2) at a dose of 150 mL ha-1 following a spray volume of 40 L ha-1 and the application of the product via treatment of seeds (T3) with a dose of 100 mL every 100 kg of seeds. Sowing was carried out on 11/09/2020, and when the plants were in the R4 and R5 stages of the culture, plant height, fresh and dry mass of the aerial part and fresh and dry mass of the root were evaluated, while that grain production was evaluated during the harvest on 03/14/2021. From the results obtained, it was observed that there was no significant difference in the F test with 5% variance for the variables analyzed, except for the variable dry mass of the root, which presented a decrease in mass when treated with Biomaphos® in the planting furrow. The results indicated that the use of these bacteria, under the conditions of this experiment, was not efficient in promoting growth and increasing production in the soybean crop, requiring further studies to verify the real potential of using these microorganisms.