Assessment the effect of deficit irrigation on yield, quality and water productivity of different cultivars of tomato in Moghan plain

Deficit irrigation and suitable choice of variety are essential optimization methods for water consumption in irrigated special in arid and semi-arid area. In order to, an experiment was conducted in a split plot arrangement based on randomized complete block design with three replications in Moghan plain under field condition at 2015 and 2016 years. Main-plot was Normal irrigation (IR1), 80 percent of full irrigation (IR2), 70 percent of full irrigation (IR3) and 50 percent of full irrigation (IR4). Cultivar included Super Bita (Cul 1), 08 (Cul 2) and Matin (Cul 3) as a sub-plot. The results of comparing the means of the data demonstrated that deficit irrigation decreased water productivity and yield of all cultivars and increased quality characteristics (TSS, present C Vitamin and pH) of all cultivars. Therefore, 08 was the best variety under normal irrigation and water deficit conditions about yield and Super bita was the superlative variety about quality characteristics to the deficit irrigation in Moghan Plain.