Abstract
Background: Groundnut (Arachis hypogaea L.) is a self-pollinated, auto-tetraploid legume crop with 2n=40 chromosomes and belongs to the family Fabaceae. Microbial inoculant Azotobacter (Azotobacter chroococcum), Bacillus (Bacillus subtilus) and Pseudomonas (Pseudomonas sps.) were applied @ 250 g/acre. Consortium comprised of 3 microbial inoculants/strain @ 166.0 each for 500 g per acre Methods: For in depth studies field experiment on PSBs along with two doses of P2O5 were carried out during two consecutive Kharif season in 2020 and 2021 on SG99.The use of phosphate solubilizing bacteria as inoculants simultaneously increases P uptake by the plant and crop yield. Strains from the genera Pseudomonas, Bacillus and Azotobacter are among the most powerful phosphate solubilizes. Result: Results revealed that the different treatments of recommended dose and double dose of PSBs exerted their significant effect on initiation of flowering, 50% flowering, completion of flowering and days to maturity.
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