Spraying of Garlic Extract, Fructose and Salicylic Acid Accelerates Bud Burst and Improves Productivity and Fruit Quality of Superior Grapevines

Abstract

This study was carried out during 2016/ 2017 and 2017/ 2018 seasons on 78 mature self- rooted, 15- years old cane trained Superior grapevines. The selected vines were uniform in vigour as possible. The vines were treated with 4 % garlic extract, 3 % fructose and 300 mg/l salicylic acid at four times (the last week of Dec., the first week of Jan., the second week of Jan., and the third of Jan.). The purpose of this study was to investigate the effect of these treatments on the time of bud burst, percentages of bud burst, berry setting, fruiting buds, shot berries, growth, productivity and berry quality of Superior grapevines. Results revealed that, the maximum values of these various measurements were found on the vines that were treated with 300 mg/l salicylic acid on the first week of Jan. and was beneficial for obtaining an economical yield advancing harvesting date, controlling shot berries and producing fairly good quality of Superior grapes growing under Sohag conditions.