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Not AvailableThree experiments were conducted to find out suitable crop geometry under drip irrigation, optimum irrigation schedule and optimum fertigation schedule for Bt cotton at Agricultural Research Station, Sriganganagar during Kharif 2009 to 2011. Paired row spacing of 60 X 120 cm & single row spacing of 90, 108 and 120 cm gave statistically at par seed cotton yield. When the row spacing of cotton was further increased to 135 cm, the yield of cotton was significantly reduced as compared to other closer row spacings tested in the study. The minimum drip cost was observed in paired row of 120 x 60 cm. Thus, 120 x 60 cm paired row spacing was found optimum for Bt cotton. The maximum seed cotton yield was recorded when drip irrigation was scheduled at 1.2 ETc, however, it was at par with seed cotton yield obtained at 1.0 ETc. Seed cotton yield at 0.8 & 0.6 ETc was significantly less than that of 1.0 & 1.2 ETc treatments. Thus, drip irrigation to Bt cotton at 1.0 ETc was found optimum. This treatment gave 31.0 % higher seed cotton yield and saved 32.9 % of irrigation water over conventional flood irrigation. The water expense efficiency was higher in the drip-irrigated treatments as compared to flood irrigation. The maximum water expense efficiency of 4.21 kg/ha mm was recorded at 1.0 ETc followed by 3.98 kg/ha mm at 0.8 ETc irrigation treatment with drip system. The maximum seed cotton yield was recorded at 120% RD of fertilizers, however, it was at par with 100% and 80% RD of fertilizer with 2% KNO3 spray. Thus, 80% RD of NPK+ foliar spray of 2% KNO3 at 90 and 105 DAS was found optimum for Bt cotton. This treatment gave 15.6 % higher seed cotton yield over conventional method of fertilizer application and irrigation. The maximum water expense efficiency of 3.95 kg/ha mm was recorded with120% of RD, followed by 3.87 kg/ha mm with100% of RD+2% KNO3 as foliar spray at 90 & 105 DAS and 3.78 kg/ha mm with 80% of RD +2% KNO3 as foliar spray at 90 & 105 DAS.Not Availabl

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Not AvailableTwo experiments were conducted at Agricultural Research Station, Sriganganagar during 2009-10 to 2011-12 on brinjal crop to find out the optimum irrigation schedule and optimum dose & time of fertilizers application with drip irrigation. The soil of experimental site was sandy loam in texture, low in organic carbon (0.19%), having field capacity 16.2%, permanent wilting point 6.3%, medium in available P2O5 (33 kg/ha), and high in available K2O (330 kg/ha). The pH (1:2) and EC (1:2) of the soil were 8.1 and 0.2 dS/m, respectively. Drip irrigation at 1.0 ETc was found optimum irrigation schedule for brinjal. It gave 30.95 % higher fruit yield of brinjal and saved 24.62 % irrigation water over conventional surface irrigation. Under drip irrigation application of 80% of recommended dose of N and K fertilizer gave significantly higher fruit yield of brinjal.Not Availabl

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Not AvailableA field experiment was conducted in Gang Canal Command area at 3"O” Srikaranpur, Sriganganagar during 2005-06,2006-07 and 2008-09 to find out optimum plant geometry of sugarcane through drip irrigation and to compare water use and water use efficiency in both the methods of irrigation. None of the quality parameters was influenced by different crop geometries in surface irrigation treatment. Only commercial cane sugar was significantly influenced by different crop geometries in drip irrigation. Single row planting at 75 cm & 90 cm gave significantly higher CCS (t/ha) than paired row planting at 120x60 cm but at par with paired row planting at 90x60 cm. Irrigation levels significantly influenced all the quality parameters except juice purity percent. The highest CCS in tones per hectare was recorded with drip irrigation at 100% PE which was at par with that obtained with drip irrigation at 80 % PE treatment but significantly higher than drip irrigation at 60% PE and surface irrigation treatments. The juice percentage was also highest with 100 % PE treatment but poll percentage; brix percentage and CCS (%) were highest with 80 per cent PE treatment. The mean data revealed that drip irrigation at 60, 80 & 100 % PE increased cane yield by 14.4, 26.4 & 44.6 per cent, respectively over the cane yield obtained with border strip irrigation. In addition to yield increase, the respective water saving was 32.9, 17.1 & 1.4 per cent. Drip irrigation also improved the quality of cane and the commercial cane sugar increased by 46.4, 35.8 and 15.1 per cent as a result of drip irrigation at 60, 80 and 100% PE, respectively over that obtained with conventional flood irrigation treatment.Not Availabl