اثر سوپرجاذب و کم آبیاری بر عملکرد، بهره وری مصرف آب و توابع تولید گوجه فرنگی گیلاسی

Due to scarcity of water resources, its negative effects on agricultural yield, and the need to ensure food security, it is necessary to provide effective strategies to improve management and water productivity in this sector. Accordingly, the present experiment has been carried out as a factorial based on completely randomized design during spring of ۲۰۱۹ in the research greenhouse of Shahid Bahonar University of Kerman. The research factors include ۳ irrigation levels Fc۱۰۰, Fc۷۵, and Fc۵۰ (۱۰۰%, ۷۵%, and ۵۰% field capacity) as the first factor and two superabsorbent levels S۰ and S۵ (۰ and ۵ gr/kg soil) as the second factor, performed with five replications. The results show that the maximum yield (۴۰. ۲۳ ton/ ha) and water productivity (۱۰.۳۶ kg/) belong to FC۱۰۰S۵ treatment, increasing by ۵.۷۱% and ۴۷.۶%, respectively, compared to the values recorded in similar level of irrigation and non-superabsorbent polymer. The maximum value of total chlorophyll (۲۵.۱۲ mg/ml) are observed in FC۱۰۰S۵ treatment, which in turn increase by ۱۹.۴۴%, compared to the control. The maximum value of vitamin c occurs in FC۱۰۰S۰ treatment, being ۱۸.۲۷% higher than minimum recorded value. Finally, the results show that the difference between irrigation water production of cherry tomato in FC۱۰۰S۰ and FC۷۵S۵ has not been not significant, despite ۲۵% reduction in field capacity moisture at FC۷۵S۵. According to the results of this research, the quadratic production function is recommended as the optimal function to estimate the mentioned traits in terms of application and non- application of super absorbent.

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