Corn growth in response to rhizobacteria, molybdenum and nitrogen
DOI:
https://doi.org/10.6008/CBPC2179-6858.2019.004.0013Keywords:
Zea mays, Diazotrophics Microorganisms, RPCPs, Coinoculation, Chemical fertilizersAbstract
Bacteria such as Azospirillum brasilense and Rhizobium tropici have the potential to improve the agronomic performance of corn due to its diazotrophic activity and also to act as plant growth promoting rhizobacteria. In addition, the use of these microbial species may enhance the isolated and combined benefits of molybdenum and nitrogen applied at sowing. The objective of this work was to evaluate the isolated and combined effects of Azospirillum brasilense, Rhizobium tropici, molybdenum and nitrogen on the growth of AG 1051 corn. The experiment was carried out in a greenhouse following a completely randomized design in a 2x2x2x2 factorial scheme. 5 repetitions, considering the absence and presence of Azospirillum brasilense, Rhizobium tropici and molybdenum in the seeds and nitrogen in the soil. In the tearing, the plant height, basal diameter of the stem, the accumulated nitrogen in the aerial part and the dry mass of the aerial part, roots and total were evaluated. Higher corn growth was observed due to nitrogen fertilization. It was also verified that the inoculation of Azospirillum brasilense in the seeds potentiated the effect of nitrogen fertilization in increasing the amount of accumulated nitrogen in the aerial part of the plants. In addition, this variable was increased due to the co-inoculation of rhizobacteria associated with molygous fertilization.
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