Agronomic characteristics of soybean as a function of inoculation, co-inoculation and N doses on eutrophic red latosol

The objective was to evaluate the agronomic traits of soybean as a function inoculation, co-inoculation and N doses in Eutroferric RED OXSOL. design randomized blocks 4x4 factorial scheme, with four types inoculation (0 = 0; 2 4.5; 4 9 8 % 18 kg ha-1). No significant differences were found for plant height, number pods per plant, grains pod, nitrogen accumulation grain yield. mean nodules higher at dose 2% N, equivalent 46 inoculated B. japonicum, variables dry mass nodules, roots shoots, A. brasilense 8% had averages 486.94 mg plant-1, 11.91 g 95.5 respectively. Nodulation efficiency linear increase value 72.32 kg-1. For nodulation efficiency, there when using N. Using 8%, root, aerial part obtained more satisfactory results than other doses.