ASPECTOS BIOMÉTRICOS DA PLANTA E PRODUÇÃO DE MANDIOCA COM INOCULANTES BIOLÓGICOS

Abstract

Cassava, due to its adaptation to climate and soil conditions, is found throughout the national territory, being an important source of food and income. This crop has a high relationship with soil microorganisms, which are still little studied. The objective of this work was to evaluate the cultivars IAC 12 and Talo Branco response to inoculation with Bacillus subtilis, Azospirillum brasilense, Bacillus megaterium + Bacillus subtilis and Azospirillum brasilense + Bacillus megaterium + Bacillus subtilis. The experiment was carried out in the field in Iporá-GO, in a randomized block design, with four replications. Fertilization and phytosanitary treatments were carried out following the technical recommendations for the crop. The harvest was carried out in October 2022, where the biometric attributes and plants, productivity, the roots dry matter and starch content as well as the estimated ethanol production were evaluated. Cassava cultivars showed a different response to the inoculants used. For IAC 12, Bacillus subtilis inoculation and Azospirillum brasilense + Bacillus subtilis + Bacillus megaterium co-inculation provided root production greater than 34 tons per hectare, which had a higher starch content, resulting in an estimated ethanol production like sugar cane. On the other hand, for Talo Branco, there was no response to the inoculants.