Insecticide Control of Drosophila suzukii in Commercial Sweet Cherry Crops under Cladding

• Published in: Insects (Basel, Switzerland) Vol. 10; no. 7; p. 196
• Main Authors: Shaw, Bethan, Hemer, Sebastian, Cannon, Madeleine F L, Rogai, Francesco, Fountain, Michelle T
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 04.07.2019; MDPI
• Subjects: Bioassays; Cladding; Crops; Cyhalothrin; Damage; Deltamethrin; Drosophila suzukii; exclusion mesh; Fruit flies; Fruits; insecticide resistance management; Insecticides; integrated pest management; Leaves; Mortality; Orchards; Oviposition; Plant protection; Prunus avium; Spinosad; spotted wing drosophila; Trees; United Kingdom > UK; Europe; insecticide resistance management; spotted wing drosophila; exclusion mesh; Prunus avium; integrated pest management
• ISSN: 2075-4450; 2075-4450
• DOI: 10.3390/insects10070196

Matsumura is a damaging invasive pest of sweet cherry. Using a series of laboratory leaf contact assays, semi-field, and orchard spray programs we aimed to determine the impact of insecticide programs on adult mortality and oviposition in cladding-protected sweet cherry crops. Tests included assessing adult mortality after contact with leaves sprayed either one or two weeks previously and emergence of adults from fruits. Spinosad, lambda-cyhalothrin, acetamiprid, lime, pyrethrin, deltamethrin, and cyantraniliprole all reduced fruit damage up to day 7 after application. Of these active ingredients, only spinosad, lambda-cyhalothrin, and cyantraniliprole gave satisfactory control up to 14 days. There was no significant difference in mortality when exposed to leaves treated either one or two weeks previously with an application of either spinosad, cyantraniliprole, or lambda-cyhalothrin; however, mortality was significantly higher than in contact with untreated leaves. In eight commercial orchards, fortnightly spray applications including spinosad, cyantraniliprole, and lambda-cyhalothrin gave effective control of until harvest with very few damaged fruits. These experiments demonstrate that currently approved plant protection products, applied to sweet cherry under protection, give at least two weeks protection from .