Influence of Irrigation Water on Quality and Quantity of Tomato Yield under Seedling Cultivation

Tomato is one of the major agricultural products in Fars Province. Previous studies show that the tomato farms under traditional surface irrigation systems lose a large volume of water with low water productivity. In the present research¡ the influence of different irrigation regimes on tomato yield quality and quantity was studied. The farm under study located in Marvdasht plain and has a heavy soil texture. The irrigation water was applied base on 60¡ 80¡ 100¡ and 120 percent of Penman Montieth water requitement method. Another treatment was considered and irrigated by the farmer management. Results show that the obtained yield increase with irrigation water while the water productivity decrease. The maximum water productivity was observed in the treatment irrigated about 80% of water requirement¡ about 11.66 to 14.21 Kg/m3. Increase in irrigation water¡ decreses the fruit brix and increases the percent of fruit juice. These variations were not statistically significant in some of the conditions. The maximum and minimum of yield were due to Super Urbana and Kingston varieties¡ respectively.