Effect of integrated NPK management on the productivity of rice–rice cropping sequence under Cauvery Delta region

The performance under graded levels of fertilizers and in combination with green leaf manure (GLM) and Farmyard manure (FYM) was studied with rice hybrids ADTRH-1 in a rice-rice cropping sequence. It was observed that 125% recommended dose of fertilizer (100:50:50 NPK) +6.25 t GLM gave the highest grain yield (5.67 and 5.96 t ha-¹), highest nutrient uptake and return per rupee invested (2.10 and 2.20), the yield advantage being 52 per cent compared RDF (100:50:50 NPK).