Purpose: methods for water resources saving, crop yields increasing, product quality improving, reducing the environmental burden on agroecosystems and agricultural sustainability ensuring.
Materials and methods. During the research under the project, the experimental and exploratory methods which were aimed at solving the problem of developing a technology for discrete and drip irrigation of cotton in the central zone of the Republic of Karakalpakstan, were used.
Results and discussion. In the control variant, the consumption of watering and irrigation water ranged from 555.0 to 762.0 m³/ha with an irrigation rate of 1937.0 m³/ha. To maintain pre-irrigation moisture at the level of 70 % of the minimum water capacity, it was necessary to carry out 3 irrigations with a watering rate of 414.5–465.8 m³/ha, and the irrigation rate was 1328.4 m³/ha. Maintaining pre-irrigation moisture at 75 % of the minimum water capacity required three irrigation applications with a watering rate of 346.8–397.6 m³/ha, which corresponded to an irrigation rate of 1,125.1 m³/ha. Maintaining pre-irrigation moisture at 80 % of the minimum water capacity required three irrigation applications with a watering rate of 275.8–321.5 m³/ha, which corresponded to an irrigation rate of 901.8 m³/ha.
Conclusions. The cotton yield under drip irrigation in the control was 27.2 c/ha, and as pre-irrigation moisture increased from 70–80 % of the minimum water capacity, an increase in yield of 2.2–6.8 c/ha was observed, while in crops under discrete irrigation it was 1.1–3.0 c/ha.
drip, sprinkler and discrete irrigation, cotton irrigation, soil, soil moisture and salinity, irrigation regime
Kurbanbaev S. E., Utambetov D. U., Karimova O. Yu., Madiyarov I. K. Testing, implementation and development of modern water-saving irrigation regime technology for agricultural crops. Ways of Increasing the Efficiency of Irrigated Agriculture. 2026;98(1):57–70. (In Russ.).
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