Effect of organics and inorganics on productivity and uptake of nutrients in rice (Oryza sativa)-toria (Brassica campestris) cropping system
DOI:
https://doi.org/10.59797/ija.v53i2.4842Keywords:
Economics, Inorganics, Nutrient uptake, Organics, Rice, ToriaAbstract
A field experiment was conducted during 2003-04 and 2004-05 at Umiam, Meghalaya to identify a suitable eco- nomically viable and feasible nutrient management practice for rice (Oryza sativa L.) - toria (Brassica campestris L.) cropping system. Application of farmyard manure (FYM) 2.5 tlha + Eupatorium 2.5 tlha, being on a par with Eu- patorium 5 tlha, improved significantly the grain, straw and NPK uptake by rice, registering 11.5, 13.4 and 9.7% in- crease in grain yield over FYM 5 tlha, Alnus 5 tlha and FYM 2.5 tlha + Alnus 2.5 tlha respectively. Manuring of rice with FYM 2.5 tlha + Eupatorium 2.5 tlha also significantly improved the mean rice-equivalent yield (REY) of the system (10.6-1 1.7%) compared with Alnus 5 Vha and FYM 2.5 tlha + Alnus 2.5 tlha respectively, giving the highest net returns (Rs 12.62 x 103/ha) and benefit : cost ratio (1.93). However, significantly higher mean grain yield of rice (3.52 tlha), system productivity (4.64 t REYIha) and highest monetary returns were achieved with 100% recom- mended dose of fertilizer (RDF) to rice + 50% RDF to toria among the inorganic fertilizer treatments. The rice - toria cropping system also removed the maximum N (99.7 kglha), P (19.9 kglha) and K (100.9 kg /ha) when ap- plied with 100% RDF to rice + 50% RDF to toria along with 5 t organic manure to rice. Thus the application of FYM 2.5 tlha + Eupatorium 2.5 tlha with 100% RDF to rice + 50% RDF to toria was found beneficial in terms of REY and economics of rice-toria cropping system in mid-hills dry terraces.References
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