Efect of plant growth regulator on preharvest fruit drop on the Golden Reinders apple variety

Abstract

The experimental plot is placed in the orchard “Dacfruct” Ltd. founded in 2006. The study subject of the experience was Golden Reinders apple variety grafted on M 9. The trees were trained as slender spindles. The distance of plantation is 3.5 x 1.2 m. The research was conducted during the period of 2013 year. The aim of this study was to evaluate the effectiveness of grower regulator agent in reducing fruit drop et in Golden Reinders apple trees. The tested agents were Obsthormon 24a (NAA), which was sprayed in one time in preharvest period. During the research, it was studied the quantity of dropped fruits under the trees and percentage of totalfruit yield.