Desenvolvimento inicial da soja proporcionado por microrganismos inoculados em sementes

Abstract

With the increasing economic importance of soybean, it’s improvement of cultivation techniques became necessary. In order to increase productivity, the need to use microorganisms that promote plant growth was observed. These microorganisms are capable of inducing the production of growth-promoting phytohormones. In order to verify this potential, the present work sought to evaluate the growth promotion of soybean plants with the inoculation of seeds with Bacillus subtilis, Pseudomonas fluorescens, Bacillus subtilis + Bacillus megaterium, Bacillus amylofiquefaciens + Trichoderma harzianum and control. The work was carried out at the Federal Technological University of Paraná, in the city of Santa Helena, from October to November 2022. The experimental design was completely randomized, in a 5x2 factorial scheme, evaluating five seed treatments and two soybean cultivars (M5947 IPRO and P96Y90 RR). Evaluations took place 35 days after emergence. Plant height, root length, root volume, root dry mass, aerial dry mass and leaf area were evaluated. With the results, it’s concluded that the microorganisms have the capacity to promote the initial development of the soybean plant. The results found increased for the aerial dry mass and leaf area variables for the treatments containing Pseudomonas fluorescens, Bacillus subtilis + Bacillus megaterium and Bacillus amylofiquefaciens + Trichoderma harzianum