Abstract

The importance of biotechnology involved in the availability of nutrients to plants in different production systems is well known. In the search for agricultural sustainability, biological nitrogen fixation process stands out, especially in tropical regions where soil organic matter can be rapidly mineralized. In this aspect, researches have pointed out the potentialities of the use of diazotrophic bacteria, as well as other growth-promoting bacteria in Poaceae. Maize crop, especially, stands out in the international scenario, requiring a deepening of the research aiming to raise the contribution potential of microorganisms including Azospirillum spp. in reducing the consumption of fertilizers from non-renewable sources while promoting an increase in agricultural productivity and mitigating environmental impacts.

Key words: Zea mays, diazotrophic bacteria, nitrogen, biological fixation, growth promoting.