Evapo-transpiration based scheduling of irrigation through drip for cotton (Gossypium hirsutum)
DOI:
https://doi.org/10.59797/ija.v51i3.5016Keywords:
ET, Micro-irrigation, Cotton, Water-use efficiencyAbstract
A field experiment was conducted during the winter season of 2001-02 and 2002-03 and summer season of 2002 and 2003 at Coimbatore, to find out the water requirement and water saving due to irrigation scheduling based on evapotranspiration (ET) through drip system compared to conventional irrigation for upland cotton (Gossypium hirsutum L.) crop. Scheduling of irrigation through drip at 0.8 Etc (crop evapotranspiration) was on a par with 1.0 Etc through drip. The total water requirement was 426.5 mm for winter crop and 467.3 mm for sum- mer crop at 0.8 Etc compared to 902.8 mm and 1,002 mm, respectively, for conventional irrigation. The yield en- hancement due to drip system during summer was 28.9, 44.5 and 61.5%, respectively, at 0.6, 0.8 and 1.0 Etc, while the yield enhancement was negligible during winter, as it coincided with heavy effective rainfall of 238 mm.References
TMC. 2002. Technology Mission on Cotton, Mini Mission I, An-
nual Report, 2002,418 pp. Asokaraja, N. and Palanisamy, K. 2003. Drip Irrigation. Water tech-
nology centre, Tamil Nadu Agricultural University,
Coimbatore, pp. 56. Halemani, H.L., Hallikeri, S.S., Hoogar, C.J. and Khadi, B.M. 2003.
Response of hybrids cotton to drip irrigation. Journal of In- 31-45 cm 4640 cm
82 18.84 19.63
66 14.82 15.57
dian Society of Cotton Improvement 28(3) : 137-178.
Oweis, T. and Hachum, A. 2002. New Approaches to managing scarce water resources in agriculture. (In) Extended Suinma- ries, Second International Agronomy Congress, vol 2. pp. .1,243-1,245, held during 26-30 November at New Delhi, In- dia.
Sivanappan, R.K., Venugopal, K.and R.P. Tarkalkar 1999. Water management in cotton including micro imgation. (In) Hand-book of Cotton in India, Sundaram et al., (Eds). Indian Soci- ety for Cotton Improvement, Mumbai, Maharashtra.
Sivanappan, K. 2004. Irrigation and rainwater management for im- proving water use efficiency and production in cotton crop. (In) Proceedings of International Symposium on Strategies for Sustainable Cotton production: A Global Vision, held during 23-25 November 2004 at University of Agricultural Sciences, Dharwad, Karnataka.
Taley, S.M., Bharad, G.M. and Shekhar, V.B. 1998. India's First Large Scale computerized Drip Irrigation Project on Israeli Technology for Cotton Growing :A case study. Proceedings of the National Seminar on Micrdrrigation Research in In- dia :Status and Perspectives for the 2Ist Century, held at Bhubaneswar, during 27-28 July, pp. 225-232.
