BIOECOLOGICAL FEATURES OF GROWING THE SPECIES AND CULTIVARS OF THE GENUS HYDRANGEA L. IN VINNYTSIA AREA CONDITIONS
Matusiak Mikhailo – PhD of Agricultural Sciences, senior lecturer of the Department of Forestry, Landscape Gardening, Horticulture and Viticulture of Vinnytsia National Agrarian University (21008, Vinnytsya, Soniachna st. 3. e-mail: email@example.com).
We found that in the botanical garden of VNAU two species and four cultivars of the genus Hydrangea L. are growing, in the City Central park – two species and three cultivars, in the Druzhby Narodiv park – three species and one cultivar, in the biostationary of VNAU – two species and one cultivar. Thus, it can be stated that in the studied Vinnytsia area grow four species and four cultivars of the genus Hydrangea L. Studies have shown that duration of flowering depends primarily on the biological characteristics of the species and cultivars of the genus, plant age, air temperature, and ranges from 27 days in H. serrata «Imperatrise Eugenie» to 145 days in H. macrophylla «Normalis». Observations during 2018-2019 and 2019-2020 revealed damage of shoots of H. aspera «Macrophylla», H. macrophylla, H. macrophylla «Alba», H. macrophylla «Normalis», H. serrata «Bluebird» and H. serrata «Imperatrise» Eugenie. In hydrangeas H. macrophylla and H. macrophylla «Normalis» in 2018-2019 the damage for the entire length of annual shoots was recorded. Signs of subfreezing of annual shoots of the crown in adult shrubs of other species and cultivars of the genus in winter period were not found. The result of visual observations showed high drought resistance of hydrangeas in conditions of Vinnytsia. It should be noted that short periods of drought are tolerated by the plants without noticeable morphological damage or with wilting of leaves during daytime. In conditions of dry season extension, the hydrangeas under study behave differently. Thus, in 2020, due to a longtime summer drought, H. bretsсhneideri shrubs dropped some of their leaves in late August. However, most species and cultivars of the genus were quite resistant to drought. Based on the obtained results, such hydrangeas as H. arborescens, H. arborescens «Grandiflora», H. arborescens «Sterilis», H. aspera «Macrophylla», H. bretschneideri, H. paniculata, H. paniculata «Grandiflora», H. paniculata «Limelight», H. petiolaris, H. serrata «Bluebird» and H. serrata «Imperatrise Eugenie», can be recommended for widespread use in ornamental plantations of the city. The rest of the plants are sensitive to fluctuations in winter air temperature.
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Scientific journal "AGRICULTURE AND FORESTRY" was founded in 1995; it was entitled as Bulletin of Vinnytsya State Agricultural Institute.
In 2010-2014 was enritled as Collection of scientific works of Vinnytsia National Agrarian University.
It has been named as Agriculture and Forestry since 2015.
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According to the order of the Ministry of Education and Science of Ukraine from 17.03.2020 № 409. Journal of Agriculture and Forestry is included in the List of scientific professional publications of Ukraine Category "B" in agricultural sciences (specialties) - 101, 201, 202, 203, 205, 206.