Response of Date of Transplanting on Phenology, Growth, Grain Yield and Economics of Basmati Rice {Oryza sativa) Varieties

摘要

A field experiment was conducted at Research Farm of CCS Haryana Agricultural University Rice Research Station, Kaul (Kaithal) during kharif season to study response of date of transplanting on phenology, growth, grain yield and economics of basmati rice(Oryza sativa) varieties. The treatments consisted of three dates of transplanting (June 25, July 10 and July 25) and four varieties (Taraori Basmati, CSR 30, Pusa Basmati 1 and Pusa Sugandha 4) laid out in split-plot design with four replications, keeping transplanting dates in main plots and varieties in sub-plots. The studies revealed that basmati rice should be transplanted up to July 10 in order to get higher grain yield. Early transplanting (June 25) attained flowering and maturity earlier by 16and 14 days, respectively, than late transplanting (July 25). Early transplanting (June 25 and July 10) significantly increased all the crop growth parameters viz., plant height, tillers/m2, dry matter accumulation and leaf area index over the late transplanting (July 25). The grain yield, net profit and benefit: cost ratio were higher with early transplanting dates as compared to late planting. Among the varieties, tall varieties (Taraori Basmati and CSR-30) took longer time to attain 50% flowering andmaturity than semi-dwarf varieties. The semi-dwarf varieties produced more tillers/m~2 than taller ones but reverse was true for dry matter accumulation and leaf area index. Pusa Sugandha 4 was found best as it gave the highest grain yield, net income,benefit: cost ratio than all other varieties.