Document Type : Research Paper

Authors

1 department of water engineering, shahid bahonar university of kerman

2 department of water engineering, faculty of agriculture, shahid bahonaar university of kerman

Abstract

The experiment was carried out as a factorial based on completely randomized design during spring of 2019 in the research greenhouse of Shahid Bahonar University of Kerman. The research factors included 3 irrigation levels Fc100, Fc75 and Fc50 (100, 75 and 50 percent field capacity) as the first factor and two superabsorbent levels S0 and S5 (0 and 5 gr/kg soil) as a second factor which was done with five replications. The results showed that the maximum yield (40. 23 ton/ ha) and water productivity (10.36 kg/m^3) were observed in FC100S5 treatment which increased by 5.71 and 47.6 percent respectively, compared to the values recorded in similar level of irrigation and non-superabsorbent polymer. The maximum value of total chlorophyll (25.12 mg/ml) were observed in FC100S5 treatment which increased by 19.44 percent compared to the control treatment. The maximum value of vitamin c was observed in FC100S0 treatment which was 18.27 percent higher than minimum recorded value. Finally, the results showed that difference between irrigation water production of cherry tomato in FC100S0 and FC75S5 is not significant, despite 25% reduction in field capacity moisture at FC75S5. According to the results of this research, the quadratic production function is recommended as the optimal function for estimating the mentioned traits in terms of application and non- application of super absorbent.

Keywords