Uman NUH | today: 07/17/2024

Evaluation of drought resistance of black locust (Robinia pseudoacacia L.) in various environmental conditions of the city of Uman

Author(s) Балабак О. А., , ,
Балабак А. В., , ,
Vasylenko O.V., , , Uman National University of Horticulture
Nikitina O.V., , , Uman National University of Horticulture, Ukraine
Гнатюк Н. О., , ,
Category The Agronomy
year 2022 issue Issue 100. Part 1
pages 180-188 index UDK 582.736:58.02
DOI 10.31395/2415-8240-2022-100-1-180-188 (Link)
Abstract The article presents the results of study the water-retaining capacity of plants in different ecological zones of the city of Uman.Experimental objects were representatives of the species black locust (Robinia pseudoacacia L.), growing in three zones of the city. The first one was NDP "Sofiyivka" NAS of Ukraine (suppositive control zone), the second one was the experimental and industrial sector of NDP "Sofiyivka" NAS of Ukraine and the third one was green spaces near the Kyiv-Odessa highway with heavy traffic. The experiments were carried out in June, July and August 2019–2021. The works were performed in the afternoon under sunny weather conditions. The aim of the study is to determine the indices of the water-retaining capacity of black locust plants under the influence of unfavorable factors of natural and anthropogenic origin. The black locust plants are characterized by a decrease of water-retaining capacity during the growing season for plants of all studied ecological zones. If the maximum loss of moisture during a 24-hour exposure in June in the highway plantings of black locust plants (zone III of the study) is 49.8 %, then in August this figure increases to 76.3 %. The plants of Robinia in the I and II ecological zones were found to be more resistant to drought under the conditions of unfavorable water regime: during the entire growing season, the leaves of these plants were characterized by the highest water-retaining capacity. The lower water-retaining capacity was characteristic of the leaves of black locust plants of highway plantings (zone III of the study). Water-retaining capacity depends on the physiological characteristics of plants and decreases as the air temperature and anthropogenic load increase. On the basis of the performed studies, it was found that the plants of black locust (Robinia pseudoacacia L.) in the conditions of the city of Uman are drought-resistant.
Key words water-retaining capacity, Robinia pseudoacacia, precipitation amount, temperature, drought resistance
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