TY - JOUR AU - Т. Ivchenko AU - О. Lyaluk AU - A. Mozgovska PY - 2022/01/24 Y2 - 2024/03/28 TI - THE FEATURES ASSESSMENT OF GROWTH AND DEVELOPMENT OF ASPARGUS HYBRIDS IN THE CONDITIONS IN THE FOREST-STEPPE ZONE OF UKRAINE JF - Vegetable and Melon Growing JA - VMG VL - 0 IS - 70 SE - Articles DO - 10.32717/0131-0062-2021-70-16-27 UR - https://vegetables-journal.com/index.php/journal/article/view/314 AB - Abstract. The aim – is to investigate the influence of varietal characteristics of 23 hybrids of asparagus promising on their growth and development of plants for cultivation in the Forest-Steppe zone by ridgeless technology on drip irrigation. Methods – are general scientific, special field long-term and short-term experiments, laboratory, calculation and statistical. Results. At the trials of ecological testing of zoned and promising new hybrids of asparagus, which was organized in 2019, an assessment of the growth and development of plants of I–III years of cultivation by without ridges technology with irrigation in the forest-steppe zone. According to the results of phenological observations of the phases of plant development of 23 hybrids of aspar agus, identified hybrids with early, medium and late spears growth, which allows to provide recommendations for the organization of the conveyor for uninterrupted production of green asparagus for a long period. The beginning of regrowth of asparagus spears was recorded at the following average daily and minimum temperatures on the soil surface: early – > 10 ºС and -1- 0 ºС; average – > 10 ºС and > 4 ºС; late – at stable temperatures > 15 ºС and minimum temperature on the soil surface > 5º С. In order to develop a model of the optimal hybrid for the production of green asparagus in the Forest-Steppe zone of Ukraine using the functions of cluster analysis, the indices of 27 indicators for assessing the growth and development of plants of I –III years of cultivation were analyzed. Due to this, genotypes with a similar response rate were clustered into groups. Hybrids such as Apollo (Walker Brothers Inc.), Gijnlim and Avalim (Limgroup BV), Guelph Equinox (OAC of the University of Guelph), Vittorio (Blumen) significantly exceeded the Aspalim hybrid (control) in terms of yield and were combined into a separate cluster. Using the method of multiple regression analysis, the equation of yield dependence with quantitative traits of plants has already been calculated. It was found that the yield of green asparagus in the third year of cultivation has functional links with such characteristics as the number and height of shoots of asparagus plants at the end of the first year of vegetation. ER -