Dual Inoculation of Rhizobium and Arbuscular Mycorrhizal Fungi Increases Soil-Total Nitrogen, Available Phosphorus, and Yield of Soybean in Vertisols

Soybean is a protein source food crop with high economic value. So far, national production has not been able to meet domestic demand resulting in continuing import of soybean. The use rhizobium and arbuscular mycorrhizal fungi (AMF) as biological fertilizers could be an alternative increase soybean production. research aimed investigate the effect dual inoculation on root nodules formation, AMF development, total-N available P Vertisols, yield This study was designed completely randomized design) 4 treatments namely no (R0), (R1), (R2), (R3), four replications. variables observed were number effective nodules, spore density, colonization, soil total-N, P, plant height, pods, seed weight. results showed that had better total- N, weight compared single un-inoculated