Uman National University | today: 06/27/2025
| Author(s) | Chukhray R.V., , , Uman National University of Horticulture | ||
|---|---|---|---|
| Category | The Agronomy | ||
| year | 2025 | issue | Issue 106 Part 1 |
| pages | 411-418 | index UDK | 597.7:632.93:633.16(477.46) | DOI | 10.32782/2415-8240-2025-106-1-411-418 (Link) |
| Abstract | The article presents the results of two-year observations of the species composition of phytophages, which was recorded in spring barley crops for 2023–2024. To obtain a high-quality harvest of spring barley, protection from a complex of pests is of great importance. Changing meteorological conditions affect the number and harmfulness of phytophages in crops, and therefore to the emergence of new or changing dominant species of phytophages in the agrocenosis. Without proper protection from phytophages, the spring barley harvest will be significantly smaller and of poorer quality, and therefore the study of the species composition of pests and the identification of the most dangerous of them is relevant at the present time. During the research, a clear increase in air temperature was observed by +0.6…+2.6 ° C in 2023 and +2.2… +4.2 ° C in 2024. A decrease in precipitation by 81 mm and 44.1 mm was observed, respectively, over the years. An increase in air temperature and a decrease in precipitation in the conditions of the Uman National University's SPD contributed to the development of phytophagous pests in spring barley crops. During the records and observations for 2023–2024, 19 harmful species were identified, among which four species exceeded the harmful index., as well as cereal flies, the total number of which was dangerous for spring barley. Warm and dry weather contributed to the development of cereal aphids, namely Brachycolus noxius Mord., Schizaphis graminum Rond, which exceeded the harmful index. for two years. Among the group of grain bugs, Eurygaster integriceps Put. stood out, which was stably distributed at the level of 4 individuals/m2. Among thrips, Haplothrips tritici Kurd was a constant danger, which had a number of 16–19 individuals/stem. When counting cereal flies, 3 harmful species were identified, namely Phorbia securis Tien., Oscinella pusilla Mg. and Mayetiola destructor Say., and their total number exceeded the dangerous mark for the crop. | ||
| Key words | phytophagous, pests, plant protection, spring barley, species composition | ||