Resumen

CHAGAS JUNIOR, Aloísio Freitas et al. Bacillus sp. as a growth promoter in soy. Rev. de Ciências Agrárias [online]. 2021, vol.44, n.2-3, pp.71-80.  Epub 03-Jun-2021. ISSN 0871-018X.  https://doi.org/10.19084/rca.22557.

Plant-growth promoting rhizobacteria have been gaining interest in agriculture worldwide as an alternative to the use of chemical pesticides. Soybean, being one of the main grains exported by Brazil, deserves attention in studies of this scope. Thus, soybean seeds (Glycine max (L.) Merr.) were inoculated with Bacillus sp. aiming to evaluate the viability of this rhizobacteria as a plant growth promoter. Four treatments with different doses of Bacillus sp. inoculant were tested: 100, 200, 300 and 400 mL of inoculant for 50 kg of seeds, with a concentration of 1x108 CFU mL-1, plus one control without inoculation. The evaluations were made at 30 and 45 days after seedling (DAS). At 45 DAS, plant height, root length, shoot dry mass, root dry mass and total dry mass were statistically higher for all applied doses when compared to the control. The number of internodes also increased significantly in the different doses used, compared to control treatment. Inoculation of seeds with Bacillus sp. was a viable alternative for growth promotion in soybean plants.

Palabras clave : Bacteria; Biomass production; Glycine max.

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