Influenţa particularităţilor biologice ale soiului asupra modului de formare a coroanei fus zvelt ameliorat

Abstract

The experimental plot is placed in the orchard “Codru-ST” Ltd. near the village Paulesti, district of Calaras. There was established in summer of 2006 a plantation with annual trees. As objects of research served the apple tree varieties Renet Simirenko and Jonagored grafted on rootstock M9. The distance of plantation 3.5x1.25 m. From 2008 was studied the productivity of the apple orchard, fruit quantity, fruit weight and fruit diameter in dependence of slender spindle crown formation methods. It was established that the highest productivity of fruits at the Renet Simirenko variety was obtained in the variant with minimize of pruning degree at crown formation and design of 2 provisional horizontal branches through fixation on row direction – 33.72 t/ha. For the Jonagored variety the highest indexes of production were registered by pruning of transfer et lateral ramifications – 30.36 t/ha. It was found the positive correlation between fruits size, fruits weight and crown formation methods.