SUBSTANTIATION OF COTTON IRRIGATION REGIME ON MEADOW-ALLUVIAL SOILS OF THE KHOREZM OASIS
Keywords:
Marginal field moisture capacity (soil penetration), cotton, irrigation regime, water productivity, yield, centnerAbstract
The article provides a comparative analysis of the establishment of cotton irrigation regimes on irrigated meadow alluvial soils of the Khorezm region from a groundwater level of 2,0 - 3,0 m according to the methods of the Research Institute for Breeding, Seed and Agricultural Technology of Cotton Cultivation and FAO. Experiments on the irrigation regime of cotton were carried out according to the following variants of irrigated soil moisture 70-70-60%, 70-80-60% and 70-80-60% (increased irrigation rates by 30%) HB. To establish the irrigation regime for cotton according to the FAO method, the program CROPWAT и AquaCrop is used. Comparison of the results showed that, according to the FAO method, the number of irrigations by 4 - 6 time more than by the method of the Research Institute for Breeding.
