IMPROVEMENT OF PROPAGATION TECHNOLOGY OF HAZELNUT (CORYLUS DOMESTICA KOSENKO ET OPALKO) CULTIVARS IN THE CONDITIONS OF THE RIGHT-BANC FOREST-STEPPE ZONE OF UKRAINE

Abstract

The article studies the efficiency o f fruit-bearing plants o f strawberry in the conditions o f Northern Black Sea region. On the basis o f long-term experimental data, the duration o f operation o f commodity plantations has been proved, the structure o f harvest, taking into account the biological characteristics o f varieties throughout their growth cycle, has been showed. It was found that the plantations o f the 1...2nd years o f operation are characterized by the highest yields: marketability reaches 84.7...90.2%, including the share o f the harvest belonging to the highest class — 28.6...42.2%.Most age-plantings (4th year o f operation) have low yields (3.5...6.1 t/ha), but also have low marketability values (19.7... 43.5%), which leads to conclusion that commercial use causes equivocal results. It was found a definite relationship between the dynamics o f fruiting and quality o f the crop within the studied varieties in the phase o f ontogenesis. The best results compared to the control (variety o f Olvia), have been showed by the variety Elsanta and Dukat. Output o f marketable products for the whole cycle o f growing plants exceeded the control one by 69.4% and 98.8%, respectively.