The paper indicates scientifically substantiated continuous, year-round use of irrigated lands in Surkhan-Sherabad valley, southern zone of Uzbekistan. In research, scientifically substantiated production agrotechnology of crops in one agricultural system were investigated, where the crops were grown as a main crop, summer crop and after winter wheat and barley harvesting. The following yields were obtained winter wheat variety “Chillaki” 4.89 to 5.65 t ha-1, barley variety “Bolgali” 5.44 to 6.03 t ha-1, after winter wheat and barley harvesting: maize variety “Uzbekistan-306 AMB” 4.60 to 5.28 t ha-1 grain, variety “Nart” 4.27 to 5.19 t ha-1 grain, cabbage variety “Sharkiya” 44.8 to 53.5 t ha-1, variety “Uzbekistan-133” 45.7 ELECTRONIC JOURNAL OF CENTRAL ASIAN PROBLEMS OF MODERN SCENCE AND EDUCATION. MARCH, 2019-I ISSN 2181-9750 126 to 54.0 t ha-1, upland cotton varieties “Bukhara-6” and “Bukhara-8” 2.85 to 3.21 t ha-1 and 2.89 to 3.24 t ha-1respectively
1. Caswell, M., Zilberman, D., 1985. The choices of irrigation technologies in California. Am. J. Agric. Econ. 67 (2), 224–234. 2. Dospekhov B.A. Methods of field experiments. Moscow, Kolos press. Efficiency and Uniformity, and Crop Water Use Efficiency, Lincoln, NB: 3. FAO and WFP 2000. Special report: FAO/WFP Crop and food supply assessment mission to the Karakalpakstan and Khorezm regions of Uzbekistan. FAO/WFP, Rome, 17 p. 4. Faurès, J., Svendsen, M., Turral, H., 2007. Reinventing irrigation. In: Molden, D. (Ed.), Water for Food, Water for Life: A Comprehensive Assessment of Water ELECTRONIC JOURNAL OF CENTRAL ASIAN PROBLEMS OF MODERN SCENCE AND EDUCATION. MARCH, 2019-I ISSN 2181-9750 135 Management in Agriculture. Earthscan and International Water ManagementInstitute, London, Colombo (Chapter 9) 5. Howell, T.A., 2003. Irrigation efficiency. In: Encyclopedia of Water Science., http://dx.doi.org/10.1081/E-EWS 120010252, http://www.researchgate.net/publication/43256707 Irrigation Efficiency. 6. Irmak, S., Odhiambo, L.O., Kranz, W.L., Eisenhauer, D.E. 2011. Irrigation 7. Israelsen, O.W. 1932. (1st Edition). Irrigation Principles and Practices. John Wiley, New York. 8. Knox, J.W., Kay, M.G., Weatherhead, E.K., 2012. Water regulation, crop production and agricultural water management—understanding farmer perspectives on irrigation efficiency. Agric. Water Manage. 108 (1), 3–8. 9. Levidow, Les, et al. "Improving water-efficient irrigation: Prospects and difficulties of innovative practices." Agricultural Water Management 146 (2014): 10. Luquet, D., Vidal, A., Smith, M., Dauzatd, J., 2005. More crop per drop: how to make it acceptable for farmers? Agric. Water Manage. 76 (2), 108–119. 11. Methods of field experiments. UzCRI, Tashkent Uzbekistan, 2007. P. 1-128. 12. Molden, D., Oweis, T., Steduto, P., Bindraban, P., Hanjra, M.A., Kijne, J., 2010. Improving agricultural water productivity: between optimism and caution. Agric.Water Manage. 97, 528–535. 13. Statistical collection “Agriculture in Uzbekistan” 2015. Tashkent. p. 1-33 (Uz). University of Nebraska–Lincoln Extension, http://extension.unl.edu/publica
Avliyakulov, M. A.; Durdiev, N. Kh.; Gopporov, F. F.; and Yakhyoeva, N. N.
"CONTINUOUS, YEAR ROUND USE OF IRRIGATED LANDS IN SOUTHERN ZONE OF UZBEKISTA,"
Central Asian Problems of Modern Science and Education: Vol. 4
, Article 12.
Available at: https://uzjournals.edu.uz/capmse/vol4/iss2/12