Abstract
Physical and chemical properties of Red Roomy grapes in response to spraying cycocel and some micronutrients were investigated through two consecutive seasons. One spray 15 days before first bloom, 30 days after berry .set, or all of the three previous dates together and/or using Mn, Zn, Cu, and Fe in combination at 0.0% or 0.3% in sulphate form were applied. Three sprays of cycocel at 1000 ppm in combined with the four micronutrients together at 0.3% exerted a lower percentages shot and cracked berries and total acidity and a greater total soluble and total sugars percentages. The adverse effect of cycocel can be diminished by spraying the micronutrients with it together at 0.3%. The most pronounced effect on berries quality was obtained as a result of spraying Red Roomy vines with cycocel at 1000 ppm plus the application of Mn, Zn, Cu, and Fe at 0.3% three times.
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