Performance of SRI Rice-Mustard cropping system under system based integrated nutrient management practices

System based integrated nutrient management practices for SRI rice-mustard cropping system was studied in a field experiment during 2013–14 and 2014–15 at RRTTS, Bhawanipatna, Kalahandi, Odisha. Application of 100% recommended dose of fertilizer (RDF-120: 60: 60 kg N: P ₂O₅: K₂O ha⁻¹) + 5t FYM ha⁻¹ with split application of nitrogen as ¼ at transplanting(TP) ½ at active tillering (AT) and ¼ at panicle initiation (PI) recorded maximum effective tillers m⁻² (183), filled grains panicle⁻¹ (213), test weight (26.4 g) and grain yield (7.54 t ha ⁻¹) of rice under SRI. The increase in yield in this best INM treatment was 59.07% higher over existing practice of application of 100% RDF with split application of nitrogen as ¹/₃ at TP, ¹/₃ at AT and ¹/₃at PI. The highest residual effect on mustard seed yield (0.81 t ha⁻¹), system productivity (9.63 t ha⁻¹), net return (Rs. 82, 488/-ha⁻¹) and return rupee⁻¹ invested (2.55) was noticed with this treatment. As regards to the nutrient management in mustard, higher seed yield of mustard (0.80 t ha ⁻¹), system productivity (7.98 t ha⁻¹), net return (Rs 59, 163/-ha⁻¹) and return rupee⁻¹ invested (2.11) was recorded with application of 50% RDF (RDF-40: 20: 20 kg N: P ₂O₅: K₂O ha⁻¹) + bio-fertilizer to mustard which was at par with 100%RDF treatment. The yield of mustard in this best treatment was 90.47% higher over control.