Fifteen root and rhizospheric soil samples were collected from different villages of Kolhapur district. Isolation was carried out on Pikovaskays medium for PSB and Aleksandrov’s medium medium for KSB. Out of eight isolates, four of phosphorus solubilizing bacteria (PSB) and remaining four of Potassium mobilizing bacteria (KMB) were obtained. All the obtained isolates of PSB and KMB were identified on the basis of morphological and biochemical tests. Efficient strain of PSB (PSB -2) and KMB (KMB-2) used for field experiment. The treatment T11, Commercial strain of PSB and KMB+RDF showed the highest growth parameters viz. Plant height, No. of branches per plant which was at par with the treatment T9, PSB+KMB+R.D. of N +75% P2O5 and K2O. The results concern yield parameters revealed that the treatment T11, Commercial strain of PSB and KMB+RDF showed the highest grain weight (44.63 g), pod yield (43.56 q/ha) and dry matter yield (24.81 kg/ha) which was on part with T9, PSB and KMB +RDF of N+75% P2O5 and K2O i.e. grain wt. (43.61g), pod yield (43.30 q/ha) and dry matter yield (24.81 kg/ha) and uptake of nitrogen phosphorus and Potassium by groundnut plant also found to be increased 120.00 kg h and 37.00kg/ha respectively. Considering this, it seems that use of PSB and KMB along with 75% recommended dose of P2O5 and K2O may be a better combination for sustainable groundnut production.

Phosphorus Solubilizing Bacteria and Potassium Mobilizing Bacteria, Arachis hypogea, rhizospheric soil

It can be inferred that from the foregoing results & discussion that significant increases in growth and yield attributes due to PSB and KMB along with chemical fertilizer may be better combination for sustainable groundnut production.

S.T. Sid, Sunita J. Waghmare, D.P. Deshmukh, R.A. Karande, M.S. Kamble & N.A. Musmade (2025). Effect of Phosphorus Solubilizing Bacteria and Potassium Mobilizing Bacteria on growth and yield of Groundnut (Arachis hypogea). Biological Forum, 17(10): 43-47.