الفهرس 
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Abstract
This study was carried out during two consecutive seasons 2016 and 2017 on fifty – four uniform in vigour of 5- years old Early sweet grapevines grafte to freedom grape rootstock. The selected vines are grown in a private vineyard located at West Matay , Matay district ; Minia Governorate where the texture of the soil is sandy. The selected vines are planted at 6.0 m between rows x 2.0 m (between vines) apart. The chosen vines were trained by spur system leaving 36 eyes/ vine (16 fruiting spurs x two eyes plus two replacement spurs x two eyes) using Boron supporting system method. Winter pruning was carried out at the second week of Des. during 2015 and 2016 seasons. Drip irrigation system. Drip irrigation system using well water (550 ppm salinity) was followed. The selected vines (54 vines) received the same horticultural practices that were already applied in the vineyard.
This study aimed to compare the effect of four slow release N fertilizers versus the urea the past release N fertilizer on vegetative growth traits, vine nutritional status, yield and berries characteristics of Early sweet grapevines.
Under the experimental and resembling conditions, it is suggested to fertilize Early Sweet grapevines grown under sandy soil with P- coated urea or urea- formaldehyde each at 25 g N/ vine for improving yield and fruit characteristics.