الفهرس 
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Abstract
-This study was carried out during 2004 and 2005 seasons on 15-year-old Red Roumi grapevines growing at EL-Dear village near Aga City, Dakahlia Governorate, Egypt. The vines were planted at 2 m between vines and 2.5 m between raws using spur-pruning under bilateral cordon trellis system leaving two buds per spur. This investigation aimed to study the effect of removing 1/3 flower cluster length and trunk girdling each alone or in combination under two levels of pruning on yield , cluster and berry characterizes. This study revealed the following results : 1-It could be concluded that pruning Red Roumi grapevine by leaving 60 eyes/vine under spur pruning with 2 eyes per each spur was suitable to obtain a good yield with better cluster and berry quality. 2- Removing 1/3 cluster length a full bloom with trunk girdling immediatelyafter fruit set presented a good cluster shape with bigger berry and colour than those obtained from using each alone or the control. 3-The best cluster and berries characterizes at removing 1/3 cluster length at full bloom with trunk girdling after fruit set under leaving 60 eyes/vine.