INFLUÊNCIA DO TRATAMENTO DE SEMENTES DE FEIJÃO COM DIFERENTES ESPÉCIES DE BACTÉRIAS DO GÊNERO Bacillus NO CRESCIMENTO E DESENVOLVIMENTO DA CULTURA

Abstract

This study aimed to evaluate the influence of bean seed treatment with different commercial products based on bacteria of the genus Bacillus on germination, phytotechnical characteristics and crop yield. The experiment was conducted in a randomized block design containing five treatments based on products composed of combinations or not of species of bacteria of the genus Bacillus, namely: B. Subtilis + B. Amyloliquefaciens + B. Velezensis + B. Pumilus; B. Pumilus; B. Subtilis + B. Amyloliquefaciens + B. Megaterium and B. Aryabhattai. Only distilled water was used as the control treatment. After germination and plant growth, the following parameters were analyzed: number of days for seed germination, plant height, number of leaves, number of pods and final grain production. Based on the results, it was observed that none of the treatments based on bacteria of the genus Bacillus accelerated the germination of bean seeds after inoculation, when compared to the experimental control. It was observed that on the first, fourth and fifth evaluation dates there was a significant difference between treatments regarding the height of the bean plants. The treatment with B. Subtilis + B. Amyloliquefaciens + B. Velezensis + B. Pumilus was the only one that increased crop growth. All treatments differed from the control and were similar regarding the average number of bean leaves only on the first evaluation date. Regarding the average number of pods per plant, it was found that on the first evaluation date the treatment with B. Subtilis + B. Amyloliquefaciens + B. Velezensis + B. Pumilus was the only one that produced more pods per plant and was different from the control. Again, it was observed that the treatment with B. Subtilis + B. Amyloliquefaciens + B. Velezensis + B. Pumilus presented the best productivity rates, suggesting that this microbial combination promoted greater efficiency in nutrient absorption and plant development. The other treatments did not differ statistically from the control. It is concluded that bioinputs based on Bacillus spp. can be used as a viable strategy to increase agricultural productivity, contributing to a more sustainable cropping system. These results highlight the relevance of using bioinputs in crop management, with the potential to improve the sustainability and yield of common beans.