Performance of SRI rice-mustard cropping system under system based integrated nutrient management practices

摘要

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 offertilizer (RDF-120:60:60 kg N:P _2O_5: K_20 ha~(-1)1) + 5t FYM ha~(-1) with split application of nitrogen as 'A at transplanting(TP) 'A at active tillering (AT) and 'A 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 ' ') 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 l/3 at TP, 1/3 at ATand '/3 at PI. The highest residual effect on mustard seed yield (0.81 t ha~(-1)'), system productivity (9.63 t ha~(-1)), net return (Rs. 82,4881- ha~(-1) ') and return rupee' 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)1), system productivity ( 7.981 ha~(-1)), net return (Rs 59,1631- ha~(-1) ') and return rupee~(-1) invested (2.11) was recorded with application of 50% RDF (RDF-40:20:20 kg N:P_20_5: Kf) ha~(-1)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.