Effect of Reduced Irrigation and Pruning Severity on Quality and Quantity of Yaghooti Grape in the Environmental Condition of Sarpole Zehab, Kermanshah Province

In order to evaluate the effect of irrigation and pruning on Yaghooti grape, an experiment was carried out in Sarpole Zehab. This study was conducted in a randomized complete block design with 5 level of pruning severity (two, three, four, five and six buds) and irrigation (reduced and full) with four replications using six years old Yaghooti grape in 2010. The results showed that there as a significant difference between pruning and irrigation treatments in terms of fruit yield, panicle number, cluster weight, berry weight and fruit quality. The highest fruit yield per plant (5.15, 5 and 5.35kg) and per hectare (12.88, 12.41 and 13.38) were obtained at four, five and six buds pruning under well-watered plants. Cluster production significantly increased by reducing pruning severity from two to six buds. Cluster weight was significantly high at four buds pruning under well irrigation conditions in compared to the other treatments. Total soluble solids decreased in six buds pruning severity comparied to the other treatments. Generally, fruit production was significantly affected by pruning severity and irrigation conditions in Yaghooti grape. According to the results of qualitative and quantitative traits especially yield, cluster weight and fruit soluble solids, remaining four buds and regular irrigation is recommend for Yaghooti grape.