ANBAR JOURNAL OF AGRICULTURAL SCIENCES

Abstract

This study was carried out during the two seasons of 2003 and 2004 at the Experimental Research Farm, Fazan. This study aimed to investigate the effect of some summer prunning on the growth and yield quantity and quality of grape vine cultivar Cardinal. Grape vines were planted in 1991 and trained by Bilateral Cordon System and using mixd pruning by leaving 90 node/ vine distributed as 7 node/ cane and 7 Renewal spurs having 2 node/ cane. This study was carried out within randomized complete block design using 4 treatments of summer pruning; i-e. Pinching, lateral shoots removal and sterile shoot removal in addition to the control treatment (no prunning). Results of the study illustrated that sterile shoot removal yielded the highest percentage of fertility of Cardinal cultivar, in the first season. However, in the second season all type pruning had a significant effects on fertility compared to the control. Lateral shoots removal as well as pinching had the highest significant values of fruit setting and quantity of the yield compared to the sterile shoot removal and control treatments, in both seasons. All summer prunning treatments significantly improved the quality of the yield compared to the control treatment in the two seasons.