National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Field experiments were carried out at Cotton Research Station, Tamil Nadu Agricultural University, Srivilliputtur, during winter irrigated season 2018-19 and 2019-20 (August to February) to find out suitable varieties and to standardize optimum fertilizer requirement of cotton under HDPS. The experiments were conducted in split plot design with three replications. The treatments consisted of three compact varieties / cultures viz., TCH 1705 (CO 15), TCH 1819 (CO 17) and TCH 1822 in main plots and four doses of fertilzers (100 % RDF - 80:40:40 Kg NPK / ha, 125% RDF- 100:50:50 Kg NPK /ha, 150 % RDF- 120 :60: 60 Kg NPK/ ha and STCR based fertilizer application - 55 :20: 20 Kg NPK/ ha) in sub plots. The results revealed that the pre release culture TCH 1822 registered the highest seed cotton yield of 2458 and 2427 kg/ha during 2018-19 and 2019-20 respectively which were comparable with CO 17 (2421 and 2402 kg/ha) and both these varieties were significantly higher than CO 15 (2290 and 2235 kg/ha).Though the application of 150 % RDF produced the highest seed cotton yield of 2604 and 2563 kg/ha, it was on par with 125 % RDF (2447 and 2426 kg/ha). The STCR based nutrient application recorded comparable seed cotton yield (2216 and 2201 kg/ ha) with 100 % RDF. The varieties TCH 1822 and CO 17 registered better quality parameters. Higher economic benefits like total income, net income and benefit cost ratio were also associated with the varieties TCH 1822 and CO 17 and 125 % RDF. It can be concluded from the study that the varieties TCH 1822 and CO 17 were highly suitable for HDPS with a fertilizer dose of 100:50:50 Kg NPK / ha for higher seed cotton yield with better economic returns and higher quality paramaters which will pave way for sustainable cotton production. The STCR based nutrient application was sufficient to obtain comparable yield and economics with 100 % RDF.
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