Authors : Kiran Pariyar, Lal Prasad Amgain, Tika Bahadur Karki, Puja Gautam and Sarad Pokhrel
Abstract: Rice cultivation in Asia including Nepal is becoming most challenging due to excessive tillage and unscientific use of resources like labor, fertilizers and water. To address this problem and to observe performance and profitability of rice over various SSNM and crop establishment approaches, an experiment was conducted on the silty loam soil with slightly acidic pH in the research fields of CNRM, Puranchaur, Kaski. The experiment was laid in Strip plot design consisting three crop establishment methods (ZT-DSR, RT-DSR and TPR) and four Site-Specific Nutrient Management (SSNM) options (NE Model, LCC, CCM-200 and FFP) with three replications in the fields where the initial crops were mustard, potato and garlic, respectively. Khumal-4 variety of rice, among the various SSNM options CCM-200 individually and its interaction with TPR, showed higher LAI, above ground dry matter accumulation and growth rate in many stages. The analysis of variance showed the significantly highest grain per panicle (222.9) under TPR but grain yield under ZT-DSR (4.11 t ha–1) remained nonsignificant with TPR (4.67 t ha–1). CCM-200 performed superior with significantly maximum effective tillers per square meter (288.2), longest panicle (26.89 cm), maximum number of grains per panicle (214), least sterility (4.19%), comparatively higher grain (5.11 t ha–1) and straw yield (6.73 t ha–1) and maximum economic return with highest B:C ratio (2.24) which was statistically at par with NE Model. Despite of the nonsignificant interaction effect of crop establishment and nutrient management on growth, yield and profitability of rice, the combination of ZT-DSR and CCM-200 could be more resource conserving and profitable.
Kiran Pariyar, Lal Prasad Amgain, Tika Bahadur Karki, Puja Gautam and Sarad Pokhrel, 2021. Performance and Profitability of Rice using the Site Specific Nutrient Management Approaches under Different Crop Establishment Options in Puranchaur, Kaski, Nepal. Agricultural Journal, 16: 41-49.