Impact of inoculation with Azospirillum brasilense associated with nitrogen sources in corn culture

Abstract

Nitrogen fertilization in corn is a factor of great impact on production costs, due to its importance in crop yield. In this way, poultry litter and nitrogen-fixing bacteria can be alternative management strategies to supply the demand. Therefore, the objective of this work was to evaluate the impacts of the inoculation of the bacterium A. brasilense associated with poultry litter and mineral fertilization on some plant parameters and on the final productivity of corn grains. The experimental design used for the randomized blocks, with 8 treatments and 8 repetitions, being the treatments constituted as follows: T1 – Control, T2 – A. brasilense, T3 – 100% N-mineral, T4 – 100% N-mineral + A. brasilense, T5 – 50% N-mineral + 50% N-organic, T6 – 50% N-mineral + 50% N-organic + A. brasilense, T7 – 100% N-organic, T8 – 100% N-organic + A. brasilense. For the parameters of plant and final productivity of corn grains, the use of the mineral source and mineral and organic association increased greater increments when compared to the source only organic. The inoculation with A. brasilense did not influence the impact parameters.