Integrated nutrient management in rainy-season groundnut (Arachis hypogaea)
1 Present address: Oilseeds Research Station, GAU, Junagadh
A field experiment was conducted at Junagadh during the rainy season of 1996 and 1997 to study the effect of organic, inorganic and biological sources of nutrients on yield, quality, nutrient content and uptake of semi-spreading groundnut (Arachis hypogaea L.) as well as nutrient status of soil. Combine application of FYM @ 20 tonnes/ha + 100% recommended dose of fertilizer + Azotobacter spp. + Pseudomonas striata recorded significantly higher shelling (%), protein content and yield, oil yield, mean yield of pod and haulm as well as gross returns than the control, at application of only FYM @ 10 tonnes/ha, Azotobacter spp. + Pseudomonas striata, 50% N of recommended dose of fertilizer + Pseudomonas striata, 50% P2O5 of recommended dose of fertilizer + Azotobacter spp. and 50% recommended dose of fertilizer, while net returns were obtained maximum when crop was fertilized with only 100% recommended dose of fertilizer. Similar trend was also observed for N, P, K content and uptake. Available nitrogen and phosphorus in soil was also improved with combined application of organic, inorganic and biofertilizers.
INM, Semi-spreading, Groundnut, FYM, Biofertilizers, Recommended dose of fertilizer.