| Congresso Brasileiro de Microbiologia 2023 | Resumo: 597-2 | ||||
Resumo:The maize crop has relevant economic and social importance in world agricultural cenario. Maize is consumed and cultivated in different countries due to its nutritional qualities. However, in tropical areas the low fertility of soils with phosphorus and nitrogen deficiency impose the necessity of high input of fertilizers. Using co-inoculated plant growth-promoting bacteria (BPCP) has proven a viable strategy for improving the plant growth and productivity. Therefore, this work aimed to evaluate the efficiency of inoculation and co-inoculation with Azospirillum and Bacillus in two agricultural seasons (2019/2020 and 2020/2021), in Sete Lagoas-MG and Santo Antônio de Goiás, GO. The experimental areas are located in the Brazilian Cerrado Bioma, with low fertility, requiring the use of phosphate fertilization. Two strains of Bacillus, identified as B. megaterium (CNPMS B119) and B. subtilis (CNPMS B2084) and two strains of Azospirillum sp. (CMS1626 and CMS2142), from the Collection of Multifunctional Microorganisms of Embrapa Maize and Sorghum were tested. The experimental design was randomized blocks, with four replicates and seven treatments. In both seasons, the use of Azospirillum and Bacillus in a simple and co-inoculated formulation increased maize productivity in both experimental areas, ranging from 10% to 20% in Sete Lagoas and between 2% and 17% in Santo Antônio de Goiás. However, in Santo Antônio de Goiás, the strain CMS1626 alone presented better agronomic efficiency compared with the other treatments, while in Sete Lagoas, the co-inoculation of Bacillus and Azospirillum (B119+B2084+CMS2142) was crucial improved the maize yield. In our study both, inoculation and co-inoculation were effective for improve the maize productivity, and were environmental-dependent. Palavras-chave: P-fertilization, Azospirillum sp., Bacillus sp., Zea mays L. Agência de fomento:Embrapa Milho e Sorgo | |||||