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Browsing Thesis by Author "Adilakshmi, Guda"
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ThesisItem Open Access Performance of rice varieties at different moisture regimes under direct seeded condition(DRPCAU, Pusa, Samastipur, 2019) Adilakshmi, Guda; Kumar, RajanTo evaluate the present investigation “Performance of rice varieties at different moisture regimes under direct seeded condition” was carried out at Crop Research Centre of Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar during Kharif (2018) in split plot design with three replications. The treatments in main plot consisted of four moisture regimes i.e., M1-AWD at 3 Days (Irrigation was applied at 3 days after disappearance of ponded water), M2-AWD at 5 Days (Irrigation was applied at 5 days after disappearance of ponded water), M3-Saturation level till physiological maturity (Irrigation was applied at zero soil moisture potential) and M4-10 % of moisture depletion (Irrigation was applied at 10 % moisture depletion of Field capacity) and in sub plot consisted of three varieties i.e., V1-Rajendra Neelam, V2-Abhishek and V3-Rajendra Saraswati. The soil of the experimental plot was sandy loam, alkaline in reaction (pH 8.42), low organic content (0.46%) and Free CaCo3 (26.7%) is high. The result showed that plant growth and yield attributes like plant height, number of tillers/m2, LAI, dry matter production (g/m2), crop growth rate (g/m2/day), number of panicles/m2, panicle length, number of grains/panicle, test weight, grain yield, straw yield, N, P and K uptake by crop, gross return, net return and B: C ratio were found to be maximum with the moisture regime of AWD at 3 Days (M1) which was significantly superior to M2 and M4 but was found statistically at par with M3. Harvest index, N, P and K content in grain and straw were not influenced significantly by moisture regimes. WUE and Water productivity was found maximum with M1 which was significantly superior to all other moisture regimes. Growth characters and yield attributing characters like plant height, number of tillers/m2, LAI, dry matter production (g/m2), crop growth rate (g/m2/day), number of panicles/m2, panicle length, number of grains/panicle, test weight, grain yield, straw yield, N, P and K uptake by crop, gross return, net return, B: C ratio,WUE and Water productivity were found to be maximum with variety Rajendra Neelam (V1) which was significantly superior to V2 and V3. Harvest index, N, P and K content in grain and straw were not influenced significantly by different varieties.