A field experiment was conducted during 1997-99 to evolve the nutrient-management practice for high yield of groundnut (Arachis hypogaea L.) under rainfed condition. Application of farmyard manure (FYM) @ 10 tonnes/ha and poultry manure @ 5 tonnes/ha. Increased mature pods/plant, pod weight/plant, sound mature kernel (%) and 100- kernel weight as compared with the control. Pod yield of groundnut increased by a mean of 14.0 and 11.3% owing to FYM and poultry manure application respectively, over the control (16.2 q/ha). Phosphorus at 60 kg/ha significantly improved mature pods/ plant, pod weight/plant, filled pods (%), sound mature kernel and 100-kernel weight over 20 kg P2O5/ha, and thereby pod yield of groundnut also. Significant improvement in yield attributes and pod yield was also noticed where gypsum was applied at 250 kg/ha either full at sowing or half at sowing or half at sowing + half at 35 DAS. Interaction effect of organic manure and gypsum treatments was significant. Maximum pod yield was obtained with application of FYM + gypsum in 2 splits. The economic optimum dose of phosphorus was computed under the application of FYM + gypsum in 2 splits as 54.0 kg P2O5/ha and at this level. 21.47 q/ha pod yield was predicted.
