Inoculação e Coinoculação de Solubilizadores de Fosfato no Cultivo de Milho com Residual de Fósforo

Abstract

With the high demand for phosphate fertilizers for the corn crop, there is a need to increase alternative uses and sources, as well as the use of phosphate solubilizing inoculants. Thus, the objective of this study was to evaluate the effect of the use of phosphate solubilizers applied in inoculation and co-inoculation in the corn culture conducted in an area with residual phosphorus. The experiment was carried out in the UFMS experimental area, in randomized blocks in a 2x4 factorial scheme, in an area with residuals from two sources of phosphorus: triple superphosphate and rock dust; and four seed treatments, being: without inoculation; Azospirillum brasilense; consortium of bacteria of the genus Bacillus; and Coinoculation. The variables plant height (AP), ear insertion height (INS ESP), stem diameter (DC), ear diameter (D ESP), number of rows per ear (N FIL), grains per row (GR FIL), mass of 100 grains (MS100) and productivity (PROD). Due to the evaluation, it was verified for the variables DC and GR FIL effects mainly of the inoculation of A. brasilense, consortium of Bacillus and Coinoculation respectively, being the significant inoculations for corn. As for productivity, a residual effect of the triple superphosphate source was verified when inoculated with A. brasilense and the Bacillus consortium, obtaining the highest averages