An experiment was conducted during the rainy season of 1995 to 1998 to study the effect of integrated nutrient supply on yield of rice (Oryza sativa) and its residual effect on soil fertility. Conjunctive use of GM (Sesbania aculeata) with half the recommended dose of fertilizers (30:15:15 kg N,P and K ha) recorded the highest grain yield (35.17 q ha), harvest index (45.29) and benefit: cost ratio (1.55). However, this remained on par with full recommended dose of fertilizers (60:30:30 kg N, P and K ha) and FYM @5t ha+ half the recommended dose of fertilizers. The soil fertility status significantly increased with the application of GM and FYM along with half the recommended NPK. Maximum reduction in soil fertility was observed in control treatment, while a considerable decrease was noticed under recommended dose of fertilizers alone.
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