Adubação fosfatada associada à inoculação com Pseudomonas fluorescens no desempenho agronómico do milho

Abstract

To evaluate the agronomic performance and chemical composition of corn grains of plants inoculated with Pseudomonas fluorescens and cultured with different doses of fertilization, an experiment was conducted with ten treatments under the completely randomized design in a 5 x 2 factorial arrangement with five levels of phosphate fertilizer (0, 40, 80, 100 and 160 kg ha-1) combined with two levels of inoculation (with and without) with four replications. Fitometrics characteristics, yield components, productivity and chemical composition of the grains were evaluated. The data were submitted to ANOVA complemented by p<0.05 Tukey test and regression study for the effect of doses of phosphate fertilizer. The inoculation with P. fluorescens associated with phosphorus fertilization at doses of 80 and 160 kg ha-1 of P2O5 favored the mass of dry root. The agronomic performance, the levels of nutrients and protein in maize grain were not influenced by inoculation with P. fluorescens and phosphorus fertilization, demonstrating the need for selection of strains that establish relations more satisfactory and stable with the host plant, as well as the identification of environmental conditions that favor the interaction between plant and bacteria.