A field experiment was carried out to determine the optimum sowing date and nitrogen (N) level for the scented rice cv. Pusa Sugandh-3. Twelve treatment combinations of 3 sowing dates, viz., 15th, 16th and 18th standard meteorological week (SMW) at an interval of 10 days and 4 nitrogen levels (‘0’, ‘40’, ‘60’ and ‘80’ kg N ha-1) were tested randomized in split plot design with three replications. Significant highest plant height (98.56 cm), tillers m-2 (333.41), dry matter (98.38 q ha-1), panicles m-2 (310.05), spikelets panicle-1(130.25) and grains panicle-1 (98.55), grain yield (45.2 q ha-1), harvest index (41.20 %), head rice recovery (47.5 %) and B:C ratio (3.03) were recorded for the early sown 15th SMW crop. Among the different nitrogen levels tested significant highest plant height (98.12 cm), tillers m-2 (342.33) dry matter (100.68 q ha-1), panicles m-2 (321.83), spikelets panicle-1(132.83) grains panicle-1 (96.79), grain yield (48.0 q ha-1), harvest index (42.68 %), head rice recovery (44.54 %) and B:C ratio (3.38) were recorded with the application of 80 kg N ha-1.Therefore, the variety, Pusa Sugandh-3 should be sown earlier in season from 15th to 16th SMW and with nitrogen application of 60-80 kg N ha-1 for realizing economically higher grain yield and profit under the temperate climatic conditions of Kashmir valley.
The changing patterns in day to day weather situations, rising CO 2 concentrations, rising sea level, increasing temperature is an indicative of the fact that climate change being encountered by the life of earth at present. Climate change is caused by natural and anthropogenic factors-the natural being due to the periodic tidal pulls exerted by the astronomical bodies on earth's atmosphere and the enhanced one's are due to Changes in the climate through past and present are being evidenced through tephrochronological, dendrochronological, paleonological and archaeological measurements.Climate change has an impact on entire ecosystem, the greatest being on agriculture. Increasing CO 2 concentration increases photosynthetic rates in C3 plants, and reduces transpiration due to decreased stomatal aperture, thus increasing water use efficiency Elevated CO 2 at 330 ppm raised rice yields by 20% and further increase to 700 ppm increased yield by 26.4%. Increased yield is counteracted by a higher temperature that causes moisture stress, delays the maturity of crops due to increased senescence and reduction in grain filling period. Under warm temperature, 2°C above normal, decline in grain yiel d was to the tune of 8.4% in rice and 12.2% in
A field experiment was conducted at KVK, Srinagar during two consecutive kharif seasons of 2010 and 2011 to study the "Effect of phosphorus and sulphur on yield and quality of soybean (Glycine max L. Merill) under Eutrochrepts". The experiment was laid down under 16 treatment combinations viz four levels of phosphorus (0, 30, 60, 90 kg P 2 O 5 ha-1) and four levels of sulphur (0,15, 30, 45 kg S ha-1) in randomized complete block design with three replications .The soil of the experimental site was typic Eutrochrepts, silty clay loam in texture having pH 7.18, EC 0.18 dSm-1 , organic carbon 0.74 per cent, available N, P, K 250.52, 11.45, 120.62, kg ha-1 , respectively. Soil was sufficient in available Fe, Cu, Mn and deficient in available Zn and sulphur. Total and organic phosphorus content in soil was 345 and 173 ppm, respectively while as total and organic sulphur content was 232 and 162 ppm, respectively. Both seed and stover yield of soybean increased significantly due to individual as well as combined application of phosphorus and sulphur.
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