EFFECTS OF DIFFERENT IRRIGATION REGIMES AND MINERAL NUTRITION RATES ON WATERMELON YIELD

Kurbonalijon  Zokirov

Авторы

Kurbonalijon Zokirov PhD student (Agricultural Science), Tashkent State Agrarian University, 2 University Str., Salar Kurgan, Kibray District, Tashkent Region, 111218, Uzbekistan;

Ключевые слова:

Watermelon, irrigation regimes, mineral nutrition, NPK, yield, marketable yield, resource efficiency, ‘Dolbi F1’, ‘Krimstar F1’, ‘Shirin’, ‘Sharq Ne’mati’.

Аннотация

This study was conducted during 2022–2024 to investigate the effects of different irrigation regimes and mineral fertilizer application rates on the yield performance of watermelon varieties and hybrids. The experiment included the varieties ‘Shirin’ and ‘Sharq Ne’mati’ as well as the hybrids ‘Dolbi F1’ and ‘Krimstar F1’. A two-factor experimental design was implemented using a randomized complete block design with four replications, where factor A represented irrigation regimes and factor B represented mineral fertilization rates. Total and marketable yield indicators were evaluated annually and the mean values of treatments were calculated. The results demonstrated that the irrigation regime of 70–80–75% of field capacity and the fertilization rate of N140P120K60 kg/ha provided the highest efficiency across all watermelon genotypes. The highest total and marketable yields were recorded in ‘Dolbi F1’ and ‘Krimstar F1’ hybrids, reaching 74.6–73.2 t/ha and 52.0–49.0 t/ha, respectively. The findings indicate that optimizing irrigation and fertilizer inputs enables resource-efficient watermelon production and contributes to increased productivity in intensive agro-technological systems.

Библиографические ссылки

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