• Dr. R.C.JAIN
• ANUPRIYA SHARMA
• AJAY BIRLA
• BHAWNA JAISWAL
• DR. G.K. NEMA AND DR. B.K SHARMA

A field experiment was conducted during kharif season of 2018 and 2019 at the Research Farm, RAK College of Agriculture, Sehore (M.P.), India to study the efficacy of co-inoculation of biofertilizers on yield, economics and microbial activities under soybean cropping. The combined application of 50% RDF + Glomus geosporum (AMF) + PGRS (Paenibacillus polymyxa) + Rhizobium japonicum (T7) proved most beneficial for growth symbiotic traits, yield-attributes and productivity of soybean in vertisol. This was equally followed by 50% RDF + Glomus geosporum (AME) + PGPR (Paenibacillus polymyxa) (T6) and then 50% RDF + Rhizobium japonicum (T5). The grain yield in T7, T6 and T5 treatments was 13.91, 13.44 and 12.94 q/ha, respectively. The combined application of 50% RDF + Glomus geosporum (AMF) + PGPR (Paenibacillus polymyxa) + Rhizobium japonicum (T7) recorded the highest net returns ( Rs 29988/ha), and 2.33 B:C ratio, followed by the treatment (50% RDF + Glomus geosporum (AMF) + PGPR (Paenibacillus polymyxa) T6 (Rs 28289/ha) and 2.24 B:C ratio. The highest dehydrogenase activity was found under the same treatment (T7) 50% RDF + Glomus geosporum + PGPR + Rhizobium japonicum (19.33 TPF µg 24 hr-1 g-1). This was equally followed by T6 treatment (50%RDF+Glomus geosporum+PGPR). The DH activity being 18.29 TPF µg 24 hr-1 g-1. The lowest (13.05 TPF µg 24 hr-1 g-1) was obtained under absolute control (T1). The same treatment T7 also recorded *Corresponding author Principal Scientist (Soil Science) E-mail:rcj2011@gmail.com the maximum number of fungi population 6.45 (CFU X 104 gm-1 soil) in the soil. The minimum number of fungi population 4.65 (CFU X 104 gm-1 soil) was noted under the absolute treatment (T1).

Co-inoculation, biofertilizers, soybean

"EFFICACY OF CO-INOCULATION OF BIOFERTILIZERS ON YIELD, ECONOMICS AND MICROBIAL ACTIVITIES UNDER SOYBEAN (Glycine max (L) Merrill) CROPPING IN VERTISOL .", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 10, page no.b716-b722, October-2021, Available :http://www.jetir.org/papers/JETIR2110179.pdf

"EFFICACY OF CO-INOCULATION OF BIOFERTILIZERS ON YIELD, ECONOMICS AND MICROBIAL ACTIVITIES UNDER SOYBEAN (Glycine max (L) Merrill) CROPPING IN VERTISOL .", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 10, page no. ppb716-b722, October-2021, Available at : http://www.jetir.org/papers/JETIR2110179.pdf