الفهرس 
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Abstract
This study was carried out during 2013 and 2014 seasons on 48 uniform in vigour 8-years old Superior grapevines grown in a private vineyard located at Abo Korkas district, Minia Governorate where the texture of the soil is clay. All the selected vines are planted at 2.0 x 3.0 m apart. The chosen vines (48 vines) were pruned during the first week of January in the two seasons using cane pruning method with the assistance of Gable supporting system. Vine load was 72 eyes/vine for all the selected vines (on the basis of six fruiting canes × ten eyes plus six renewal spurs × two eyes).
The main target of this study was examining the effect of single and combined applications of four vitamins namely: A, B, K, and E on some growth traits, nutritional status of the vines, yield and quality of Superior grapes.
Conclusion:
For promoting yield and quality of the berries of Superior grapevines as well as reducing the percentage of shot berries in the cluster, it is advised to spray the grapevines with a mixture of vitamins A, K and E, each at 25 ppm and vitamin B complex at 50 ppm three times at growth start (3rd week of February), just after berry setting (3rd week of March) and at one month later (3rd week of April).