Effect of inoculation with plant growth-promoting bacteria and nitrogen fertilization rates on the initial growth of black oats
DOI:
https://doi.org/10.52945/rac.v38i2.2024Keywords:
Avena strigosa, Azospirillum brasilense, Pseudomonas fluorescensAbstract
Azospirillum and Pseudomonas are genera of soil bacteria that fix atmospheric nitrogen and can promote plant growth. The objective of this work was to evaluate the emergence rate and initial development of black oats using commercial inoculants based on A. brasilense and/or P. fluorescens under nitrogen fertilization doses. Two commercial inoculants were tested and applied at the time of sowing; after 20 days, nitrogen was applied at doses corresponding to 0, 50 and 100% of the recommended dose. After 40 days, the emergence rate, number of tillers and root, shoot and total dry biomass were evaluated. Nitrogen fertilization did not affect the variables and both inoculants promoted increases of over 90% in root, shoot and total dry biomass compared to the control. The inoculants containing A. brasilense in combination or not with P. fluorescens favor the emergence and initial growth of black oats, demonstrating its potential as a promising bio input for the crop.
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Copyright (c) 2025 Janaína Muniz, Murilo Dalla Costa, Roberto Akitoshi Komatsu, Albiery Rafaeli de Abreu
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