الفهرس 
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Abstract
This investigation was carried out during three consecutive seasons of 1991, 1992, and 1993 on 12-years old head trained Roomy Red grapevines grown at Nazlet El-Fallahein Village , Minia Governorate . The target of this experiment was studying the effect of different concentrations and numbers of sprays urea and /or boric acid on behaviour of buds , growth , nutrilional status of vines , yield and physical and chemical properties of Roomy Red grapes . Two , three , four or five sprays for both urea at 0.5 , 1.0 or 1.5% and boric acid at 0.1 , 0.1, or 0.3 in addition to the control treatment were applied .