Avaliação de eficiência agronômica de AZOSPIRILLUM brasiliense na cultura do milho

Abstract

The main objective of this study was to identify the efficiency of inoculation of wheat seeds with bacteria Azospirillum brasilense in association with nitrogen fertilization. This study eight different treatments were tested: only seed inoculation; only inoculation (double dose); inoculation + nitrogen fertilization (70 kg / ha); inoculation + N at sowing (20 kg / ha); inoculation + N at sowing (20 kg / ha) + nitrogen fertilization (70 kg / ha); inoculation + N at sowing (20 kg / ha) + nitrogen fertilization (35 kg / ha); N at sowing (20 kg / ha) + nitrogen fertilization (70 kg / ha); without inoculation and without N. The treatments were arranged in four randomized blocks. The plots consisted of an area of 27.2 square meters, with dimensions of 10 meters long and 2.72 meters wide. Different variables were evaluated in wheat, which are divided into three groups: morphological characteristics, primary and secondary components yield components. Regarding the results, had no statistically significant results of inoculation on parameters such as productivity, 1000 kernel weight and hectolitre weight. Other variables, such as dry matter and the number of ears per square meter, statistically significant results when the interaction between the inoculation of the nitrogen topdressing. In conclusion, according to the results found in this study, inoculation has no significant effect on the development and yield of wheat.