Aigerim Darigulovna Abayeva, Raul Kemalevich Karychev, Kurmankul Tuleutayevna Abayeva and Ainur Kanatovna Igembaeva
Abstract
The paper presents findings of the research on recognized and promising varieties of apple trees grown from potentially ready-to-fruit seedlings, optimization of planting density, improvement of crown formation and crown pruning systems as well as drip irrigation modes in adaptive support-free orchards based on the Zhetysu-5 clonal rootstock. Biometric records have been kept of experimental trees, physiological properties of varieties and moistening contour according to soil physical properties. It has been found that in the second year after planting, the knip-baum seedlings of the Gala Must, Golden Reinders and Ligol varieties have the highest yield potential by the following parameters: trunk diameter, total shoot growth, and efficient crown volume. The Idared and Golden Delicious varieties have the highest yield potential among one year old seedlings.