IMPROVING FRUIT QUALITY OF CRIMSON SEEDLESS GRAPES BY ETHEPHON AND ABSCISIC ACID FOLIAR APPLICATIONS WITH NEW SPRAYING MACHINES

Abstract

This study was conducted in two successive seasons (2017 and 2018) 'Crimson Seedless' vines budded on Richter 110 rootstock at four years old, grown in a private orchard at Al Qattah, The vines were trellised by the Spanish parron system. The vines pruned during the last week of December to twelve fruitful canes, each one contained eight buds and each arm has 1 spur left on it which contained 2 buds. Thus, the bud load was 104 buds/vine. Thirty-five clusters were left per vine. The experiment was laid out in a split plot design, the main plots were separated for spray machines and the sub plots were split by material types. So the experiment was consisted of eighteen treatments with for replicates, one tree for each replicate.