Harmful entomofauna of hemp Cannabis sativa L. (analytical overview)

Abstract

Goal. To study the genesis of the harmful hemp entomofauna, to analyze the areas of expansion, features of development and harmfulness of a complex of insect phytophages. Methods. Information-analytical. Collection and research of information data of Internet resources and available specialized literature. Results. Hemp plants are damaged by a large number of both polyphage and specialized insect phytophages. With a high level of adaptability and ecological plasticity, they are capable of causing significant damage to hemp crops and sometimes even completely destroying their seedlings. Among the polyphage insects, pests from the families are of particular danger: (Elateridae), (Scarabaeidae), (Curculionidae), (Cerambycidae), (Mordellidae), (Noctuidae), (Pyralidae), (Erebidae), (Nymphalidae), (Lycaenidae), (Agromyzidae), (Orthoptera), (Acrididae), (Tettigoniidae), (Aphidiidae), (Miridae) and (Pentatomidae). The dominant specialized phytophages in the hemp field are: flea beetle — Psylliodes attenuata Koch. (Coleoptera, Chrysomelidae), tumbling flower beetles — Mordellistena micans (Coleoptera, Mordellidae), hemp moth — Grapholitha delineana Walk (Lepidoptera, Tortricidae); hemp aphids — Phorodon cannabis Pass (Homoptera, Aphidiidae). Conclusions. The genesis of the harmful hemp field entomofauna has been studied. It has been established that, for thousand years, a harmful entomocomplex has been forming on hemp, which, depending on the specific environmental conditions, has been gradually supplemented by introduced, adapted insect species, and at present it is quite numerous. Thus, according to various data, the total entomocomplex of hemp includes 240—300 species and has more than 70 specialized and polyphage insect phytophages, which can cause significant damage to the sprouting seeds, root system, overground vegetative and reproductive part of the plant.