Abstract
This study was conducted in a private vineyard locates in Bare Buhar village near Dohuk city, Iraq. During the growing season 2005.The cultivar used in this study was Taifi .Three training systems had been used namely:- head, cane (Kniffin) and " T ' trellis training systems. The load lifted on each vine for every training system was 32 eyes (four canes each with six eyes and four renewal spurs each with two eyes) for the cane and " T " trellis systems and eight spurs each with four eyes for the head training system. Each training system consisted of three replicates (one vine per replicate) using RCBD and means were tested by Duncan's multiple range test at 0.05 levels. The results could be summarized as follows: Total leaf area per vine. The " T" trellis system was significantly overtopped over the other two training systems in total leaf area per vine. Physical, Mechanical and Chemical characteristics of the yield, its components and the berries. The yield per vine, clusters number, cluster width, berries number per cluster, weight and volume of 100 berries, numbers of seeds per berry, juice density, cluster compactness, anthocyanin and total phenolics content and total sugars were significantly overtopped with " T " trellis training system. The cluster weight, cluster length, berry length and width, berry attachment force, total soluble solids, total soluble solids / total acidity. were significantly surpassed with cane training system .While the head training system did not showed any overtopping in any of the studied characteristics. It was concluded that the best training system for the Taifi cultivar was " T " training system.
