Effect of conjunctive use of phosphorus and bio-organics on growth and yield of groundnut (Arachis hypogaea)

A field experiment was conducted during the rainy season of 2000 and 2001, to study the effect of conjunctive use of phosphorus and bio-organics on groundnut (Arachis hypogaea L.). Application of 60 kg P₂O₅/ha markedly influenced the growth and yield attributes resulting in significant increase of pod yield by 14.01% over the control. Seed inoculation with Rhizobium or phosphorus-solubilizing micro-organism (PSM) marginally improved yield, but their combined use increased pod yield significantly. Both the organics, i.e. FYM and need-cake, significantly increased the pod and haulm yields, but when half quantity of these organics were integrated with Rhizobium and PSM, the highest pod yield of 31.80 q/ha with FYM 5 tonnes/ha + Rhizobium + PSM was obtained. Neem-cake @ 1.5 tonnes/ha in the presence of same biofertilizers was next to it.