BIOLOGICAL EFFICACY OF INSECTICIDES IN THE CONTROL OF JAPANESE GRAPE CICADA (Arboridia kakogowana Mats.) IN THE CONDITIONS OF THE SOUTH OF UKRAINE

Abstract

The article presents the results of studying the effectiveness of insecticides against Japanese grape cicada in the South of Ukraine. Biological preparation Aktofit (0.2%) EC and other insecticides from different chemical groups were used: Voliam Flexi (480 g/l) SC, Dursban (480 g/l) EC, Karate Zeon (50 g/l) CS, Koragen (200 g/l) SC, Proclaim (5 g/kg) SG, Engeo (247 g/l) SC. This insecticides have shown varying efficacy. The highest efficiency was obtained with the insecticides Voliam Flexy (300 g/l) SC – 89.3% and Engeo (247 g/l) SC – 86.3%, which contain two active substances with a different mechanism of actions. Very low efficiency in controlling the number of leafhoppers was obtained with the biological preparation Aktofit (0.2%) EC – 53.8%. According to the research results, we can conclude, that the most effective and basic method controlling the Japanese grape leafhopper remains the chemical. The decision about need of treatments should be made only after assessing the real phytosanitary situation, taking into account the threshold of the number of pests, harmfulness, and the degree of colonization of plants. With a low number of phytophages, continuous treatments should be abandoned, limiting themselves to spraying outbreaks of mass reproduction.