Abstract
Codling moth is a very dangerous pest in apple orchards: the pest could damage up to 70-90% of pome fruits in the years of mass reproduction. The climate change increased the harmfulness of the pest during the last years. The aim of our study was the determination of “Shin-Etsu” dispenser application efficiency for codling moth disorientation comparing with conventional apple protection system. The experiment was done in apple orchards of JSC “Dubovoye” (Tambov oblast) in 2020-2021. The objects of the study were the scab immune cultivars Venyaminovskoye and Flagman grafted on B396 rootstock. Codling moth damaged 9.4-12.1% fruits in the control treatment after the first generation and 11.6-15.2% by the second generation. The application of the experimental protection system with dispensers decreased the fruit damage rate after the first generation up to 0.5-0.8% and second generation—0.9-1.1%. The biological efficiency of the experimental system in both cultivars was higher and reached 92.2-96.7% after the first generation and 90.5-94.0% after the second. The average yield in the “Shin-Etsu” protection system was 9.7-12.5 kg tree-1 where 87-90% fruits were premium quality.
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