EFFECT OF IRRIGATION REGIMES ON THE GROWTH, DEVELOPMENT DYNAMICS AND YIELD OF COTTON
Аннотация
This article analyzes the relationship between the growth and development dynamics of cotton (Gossypium hirsutum L.) variety “Bukhara-10” during the vegetation period (plant height, fruiting branches, yield components, and number of bolls) and final yield under different irrigation regimes in saline-prone meadow-alluvial soils of the Bukhara region. Field experiments conducted in 2025 included 4 treatment variants with 3 replications and were evaluated based on phenological observations carried out on June 1, July 1, August 1, and September 1. The results demonstrated that differences associated with irrigation regimes emerged from the early stages of vegetation and progressively increased in a cumulative manner throughout plant development. The treatment maintaining pre-irrigation soil moisture at 70–80–65% of field capacity (FC) and applying drip irrigation according to the 3–11–1 schedule showed the highest performance: by September 1, plant height reached 102.8 cm, the total number of bolls was 14.6 per plant, and the number of opened bolls reached 9.9 per plant, resulting in the highest yield of 49.3 centners/ha (statistically significant according to LSD analysis), which was 28.7% higher than the control treatment (38.3 centners/ha). The findings indicate that growth indicators recorded during the early vegetation stages can serve as reliable predictors of final cotton yield.
Библиографические ссылки
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