Influence of GA4+7 based products on the productivity of Golden delicious apple plantation

Abstract

The experimental orchard was placed in the “Accesal Group” Ltd., founded in 2009. The study subject was Golden Delicious apple variety grafted on M 26. The trees were trained as slender spindles. The distance of plantation is 4.0 x 2.0 m. The studied gibberellic acid was GA4+7, product Gerlagib LG and Gibbera, SL. To study the influence of the treatment on fructification and quality of Golden Delicious apple variety, four variants were experimented: 1. Control, no treatment; 2. Gerlagib LG, 0.5 l/hа; Gibbera, SL, 0.25 l/hа; Gibbera, SL, 0.50 l/hа. In was demonstrated, that products Gerlagib LG and Gibbera, SL in dose 0.5 l/ha may be included in the technologic system to stimulate fruit formation, productivity and quality of fruits, up to 3 times, starting from petal fall stage and continuing intervals of 7-10 days.