Cherednychenko L. The efficiency of nursery for apple-tree rootstocks cloning depending on the maintenance of substrate and branching removal in the Right-Bank Forest-Steppe of Ukraine

Object of research - changes of plants parameters and productivity of nursery of clonal rootstock of apple-tree depending on the maintenance of substrates in rows, the method of removing of lateral branches, the term of treatment and concentration of potassium salt of naphtylacetic acid solution. Purpose of research - improvement of technology of growing clonal layers of apple-tree of M9 and M26 for achievement of the maximal productivity of the nursery planting. Methods of research - the field, laboratory, mathematical statistic. Theoretical and practical results - the mulching of substrate roller in nursery of clonal rootstocks of apple-tree of M9 by agrofiber or whitewashing it by chalk, and also the removing of lateral branches by hands or sprinkling the nursery planting of M9 by potassium salt of naphtylacetic acid solution are recommended. Scientific novelty - in the Right-bank Forest-steppe the productivity of clonal rootstocks of apple-tree of M9 and M26 in the irrigated nursery planting depending on mulching of sabstrate roller in a row by agrofiber or whitewashing and the method of removing of lateral branches by a growth regulatory matter are set. Extent of introduction - in the course of teaching of "Nursery Growing" and in fruit crop nursery of educational-scientifically-production department of Uman SAU and in LTD. "Agrofirm of "Irpin'-2002" of the Kiev-Svyatoshinskyi district of the Kiev region. Sphere of application - industrial nursery groving, agrarian educational institutions.