Regulation of fruit loaders in apple orchards decisive technological element to increasing fruit quality

Abstract

The researches were carried out in the orchard of the company Ltd. „Codru ST” during 2014-2017, age of trees 9-12 years, varieties Gala Must, Golden Delicious Reinders, Idared, grafted on M9, planting distance 3,5x1,2m, crown shape improved slender spindle. For chemical thinning 3 growth regulators with different treatment basis were used: Geramid New (1.2; 1.5; 2.0 l/ha), Dirager (0.2; 0.3; 0.4 l/ha) and Gerba 4LG (2.0; 2.5; 3.0 l/ha). Higher values of the given index during the research were scored in trees of Idared variety (170.3 g) compared to those of Golden Reinders (161.0 g) and Gala Must (154.8 g).