Bacillus aryabhattai dose recommendation for corn seed inoculation

Autores

Palavras-chave:

Zea mays, plant growth-promoting bacteria, biotechnology, optimal inoculant dose

Resumo

The use of plant growth-promoting bacteria (PGPB) can be a sustainable alternative to improve the uniformity and speed of emergence and initial growth of plants. However, the effects of Bacillus aryabhattai inoculation are still incipient and inconclusive, and there is no recommendation for the use of inoculant doses containing B. aryabhattai. This study was conducted to investigate the effectiveness of B. aryabhattai inoculation in improving the germination and initial growth of corn plants (Zea mays L.), and to determine the optimal inoculant dose to be recommended for inoculation of corn seeds. Corn seeds were inoculated with 0, 10, 20, 30 and 40-mL kg–1 of the inoculant containing the strain CMAA 1363 of Bacillus aryabhattai. Four replicates of 50 seeds were sown in plastic boxes containing washed coarse sand. At 18 days after sowing, the emergence rate (E), shoot length (SL), root length (RL), shoot dry matter (SDM) and root dry matter (RDM) was recorded. The results showed that the use of inoculant containing B. aryabhattai improved the initial growth and dry matter production of corn plants. This suggests that B. aryabhattai could be an excellent option for producing microbiological inoculants with enormous potential for use in Brazilian and global agriculture. The optimal dose of inoculant containing B. aryabhattai to be applied to corn seeds can range between 20 and 22-mL kg–1 of inoculant.

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2024-04-20

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