Browsing by Author "Sharma, Parmod"
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ThesisItem Open Access Effect of integrated weed management on yield and quality of cotton (gossypium hirsutum L.)(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 1995) Sharma, Parmod; Bishnoi, L. KThesisItem Open Access Salt and water dynamics in soil under drip irrigation system on cole crop(CCSHAU, 2012) Sharma, Parmod; Sanjay Kumarleaching of excessive salts, selection of salt tolerant crops, frequent application of water etc. Thus, a field experiment was conducted at CCS Haryana Agricultural University, Hisar to study the salt and water dynamics in soil under drip irrigation system on cabbage crop and to investigate the effect of frequency and salinity levels of irrigation water on cabbage. The residual moisture content in the root zone after 90 days of transplanting showed increasing trend with increasing level of salinity of irrigation water beyond ECiw 3 dS/m. Equal amount of water application coupled with information on residual moisture content in the rootzone suggested that cabbage plants utilized lesser amount of water with increasing level of salinity beyond ECiw 3.0 dS/m. In daily irrigation under saline water of ECiw 12 dS/m (F1S5), the ECe values after 90 days of transplantation increased by 206.4, 222.1, 244.4 and 264.1% on comparing with initial values in 0- 15, 15-30, 30-45 and 45-60 cm layers, respectively. In alternate day irrigation under saline water of 12 dS/m (F2S5), the ECe values after 90 days of transplantation increased by 279.2, 262.7, 270.1 and 280.2% on comparing with initial values in 0-15, 15-30, 30-45 and 45-60 cm layers, respectively. In daily irrigation, harvesting was started early (60 days after transplanting) in canal water, saline water of ECiw 3 and 6 dS/m, whereas, in alternate day irrigation, it was in canal water and saline water of ECiw 3 dS/m. The date of first harvesting was also affected by the quality of irrigation water. Use of highly saline water (ECiw > 6 dS/m) resulted into delay of first harvesting by about 20 days as compared to the use of relatively good quality water suggesting that use of good quality and saline water in different parts of the fields may be effectively used to prolong the productive season of cabbage. In daily irrigation treatment, the relative yields obtained were 100.53, 90.75, 67.82, and 41.68 % in F1S2, F1S3, F1S4 and F1S5 treatments, respectively, as compared to the yield recorded in canal irrigation (F1S1). In alternate day irrigation treatment, the relative yields obtained were 100.8, 86.16, 60.30 and 28.63 % in F2S2, F2S3, F2S4 and F2S5 treatments, respectively, as compared to the yield recorded in canal irrigation (F2S1). Higher yield of cabbage under daily irrigation as compared to alternate day irrigation for different levels of salinity of irrigation water suggested the importance of high frequency of irrigation for the use of saline water.