Abstract
Nitrogen (N) is the nutrient required in greatest quantity by the common bean (Phaseolus vulgaris L.). Nitrogen fertilizers used have a high economic and energy costs, and the low efficiency of use by plants, resulting in heavy losses and risk to the environment. Co-inoculation of bacteria of Azospirillum genus with the Rhizobium can be an alternative for the supply of N to the crop becau…