Crop Research Station, Narendra Deva University of Agriculture and Technology, Ghaghraghat, Bahraich, Uttar Pradesh, 271901
1Present address: Agricultural Experiment Station, N.D.U.A.T., Kumarganj, Faizabad, Uttar Pradesh
A field experiment was conducted during 1995–97 at Ghaghraghat, Uttar Pradesh, to study the effect of integrated nutrient management on rice [Oryza sativa L) and residual effect on succeeding wheat [Triticum aestivum L. emend. Fiori & Paol.). Application of 50% of recommended dose of nitrogen (RDN) through inorganic fertilizer (IF) + dhaincha (Sesbania aculeata L.) @ 2.5 tonnes/ha to rice gave significantly higher mean grain yield of rice (31.8 q/ha) and wheat (28.4 q/ha) over rest of the treatments except 50% RDN-IF+PM @ 5 tonnes/ha in rice. The yield of succeeding wheat increased by 43.1 to 48.9% because of integrated use over the control. Rice fertilized with 75% RDN through inorganic fertilizer (IF) + blue green algae (BGA @ 16 kg/ha) resulted in significantly higher grain yield over 75% RDN-IF+BGA @12 kg/ha during both the years. Application of ZnSO4 with full RDF resulted significantly higher yield of rice and succeeding wheat as compared to full RDF alone through inorganic fertilizers. There was a build-up of available N, P, K and organic carbon in soil in all integrated nutrient management practices except full RDF alone and RDF + ZnSO4. The bulk density and pH reduced under in all nutrient management practices.
Integrated use, Inorganic fertilizer, Transplanted rice, Succeeding wheat, Rainfed lowland
