Effect of Plant Density and Grape Training Method on Pomological Characteristics and Yield of Olive and Grape in Intercropping System

The olive and grape intercropping in Kermanshah province was studied by an experiment in Dallaho Olive Research Station (longitude of 45˚, 51΄ E and latitude of 34˚, 30΄ N and the height of sea level 633m). A factorial experiment based on randomized complete block design with 3 density (6×7, 7×7 and 8×7 meters) in olive and 2 training systems for grapevine in 3 replications was carried out. Each experiment unit consists of 9 olive tree and 12 grapevine were used. Land was prepared in November 2010 in a 3528 m2 area and trees was planted. Trees were irrigated by drip irrigation in a 3 day intervals. Olive tree compared in growth character (juvenile period). The results showed that olive density and grape training system affected the fruit and yield characteristics of olive and grapevine trees in intercropping system. 7 × 7 cropping density and grape supporting training increased fruit and oil yield, fruit size and dry weight in olive trees, as well as increased cluster weight, weight and diameter of berry, yield per vine and yield per hectare in grapevine Yagutoi cultivar. The results showed that the grape supporting system compared to the Pabrahi system increased the yield of approximately 12% in olive and grape intercropping. Moreover, the grapevine training systems did not affect the fruit attribute and yield of olive trees, but the vine density had significant effect on olive and grapevine yield, In conclusion 7 × 7 olive density and also the supporting system in olive- grape intercropping is recommended.