Effect of Zinc and Boron on Fruit Quality of Early Sweet Grape under Desert Conditions

Abstract

The investigation studied the effects of zinc, boron, and spraying time on the marketability of Early Sweet (Vitis vinifera L.) table grape berries. The experiment was conducted over the course of two consecutive seasons in 2017 and 2018 on Early Sweet vines grown in sandy soil under drip irrigation in a private vineyard located in the Giza governorate, Egypt. Furthermore, as compared to untreated
berries, all investigated treatments considerably enhanced the quality of the berries in terms of increased weight, total soluble solids, and total acidity reduction. Vine plants sprayed with 500 ppm zinc and 250 ppm zinc oxide at full bloom had the best results. It was determined that annual spraying of Zn at 500 ppm and B at 250 ppm was required to get satisfactory cluster.