Co-Inoculations with Plant Growth-Promoting Bacteria in the Common Bean to Increase Efficiency of NPK Fertilization

Given the hypothesis that co-inoculation with plant growth-promoting bacteria (PGPB) enhances beneficial effects of Rhizobium tropici greater mineral nutrition, optimizes biological nitrogen fixation and reduces use fertilizers in bean plants, objective this research was to evaluate synergistic associated Azospirillum brasilense, Bacillus subtilis, Pseudomonas fluorescens their combinations, on increasing efficiency NPK fertilization obtain high winter yields (irrigated) common Cerrado region. The experiment carried out field over two years a Rhodic Hapludox under no-till system Selvíria, Brazil. experimental design comprised complete randomized blocks four replications 3 × 7 factorial scheme. treatments consisted three doses fertilizer (control—0 kg ha?1 (control); 50% recommended dose; 100% dose parts) seven inoculation or (control; tropici; R. + brasilense; subtilis; fluorescens; A. brasilense B. P. fluorescens). PGPB co-inoculations increased hundred-grain weight, grain pod?1, plant?1 yield following doses. by without treatments, subtilis (100%).