Eastern chestnuts nuts — dangerous chestnut pest
Goal. Determine the main ways of entry into the country of the dangerous quarantine type of eastern chestnut walnut-fruit (Asian chestnut gall Trach).
Methods. Analytical informational messages of the European and Mediterranean Plant Protection Organization (EPPO), as well as data of EU phytosanitary services, literature and Internet resources.
Results. Information is given on the new economically important species of Dryocosmus kuriphilus Yas., which is rapidly spreading in the countries of Europe. In Ukraine, the eastern chestnut nut walnut has a quarantine status. The threat of entering the species Dryocosmus kuriphilus with planting material (seedlings) of certain types of chestnuts from European countries in Ukraine exists. The absence of natural enemies contributes to the active resettlement of the pest. The focus should be on the study of the entomophages of the walnutworm. It is known that in Japan it is found in 26 species of parasitoids that control reproduction, in China — 11, in Korea and Italy — 15 species. The rapid spread of the pest in the EU is of great concern to scientists. The lack of natural enemies, as well as effective drugs approved for use, threaten the disappearance of chestnut plantations. The experience of some European countries shows that it effectively regulates the number of its specialized Torymus sinensis parasitoids, which was introduced into Europe from China and Japan.
Conclusions There is a danger of entering into Ukraine the species Dryocosmus kuriphilus, which has quarantine status and is a threat to chestnut plantations.
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