Effect of Auxiger growth regulator on development and fructification of Regina cherry variety

Abstract

Cherry presented and continues to present an economic importance, both worldwide and in Moldova. The growth regulators manage the growth and development process of cherry trees, enable to increase the plant resistance to stress, increase fruit setting, fruit weight gaining and reduce damage caused by physiological diseases during storage. The aim was to evaluate the influence of growth regulator Auxiger on physiological processes, development of trees, fruit production, fruit size, its quality, cracking index and period of maturation. The study subject of the experience was Regina cherry variety, grafted on Gisela 6. The trees were trained as spindle system. The distance of plantation is 4.0×2.0 m. The experimental plot it was placed in the orchard “Vindex–Agro” Ltd. founded in 2012 fruit growing, when the fruits diameter was 12–13 mm (26.05.16). During the analyzed period, it was established that the physiological processes, development of trees, average weight of fruits, the productivity, fruit size, period of maturation increase when treating with Auxiger growth regulators in dose of 0.7 l/ha and reduced the cracking index when the diameter of the fruits was 12–13 mm.