Effect of Zinc and Boron on Vegetative Growth and yield of Early Sweet grape under desert Conditions

Abstract

Experiment was carried out throughout two successive seasons of 2017 and 2018 on Early Sweet vines grown in sandy soil under drip irrigation system in a private vineyard located at Giza governorate, Egypt to investigate the role of the zinc and boron elements as well as spraying time in improving vegetative growth and yield of Early Sweet table grape (Vitis vinifera L.). Moreover, all studied treatments significantly improved leaf area; leaf chlorophyll contents; shoot length; number of leaves per shoot; Weight of pruning wood; clusters number per vine and total yield per vine. The best results were obtained on the vines that sprayed with 500 ppm Zn with 250 ppm B at full bloom. It could be concluded that spraying Zn at 500ppm, B at 250ppm annually was necessary to get high yield of Early Sweet grapevines.