Pest Management Science (2018) 74, 861-867

Felipe Andreazza, Henry E. Vacacela Ajila, Khalid Haddi, Felipe Colares, Angelo Pallini and Eugênio E. Oliveira (2018)
Toxicity to and egg-laying avoidance of Drosophila suzukii (Diptera: Drosophilidae) caused by an old alternative inorganic insecticide preparation
Pest Management Science 74 (4), 861-867
Abstract:
Background
The application of synthetic insecticides remains the most used tool for the management of spotted-wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae). However, management of this pest in the organic production of soft-skinned fruits is a complex task due to the restricted number of registered products. Here, we assess the toxicity of lime sulfur and evaluate whether lime sulfur-treated strawberry plants affected the oviposition and development of D. suzukii.
Results
Lime sulfur exhibited adequate toxicity to D. suzukii (LC₅₀ = 26.6 mL L^-1) without phytotoxicity to strawberry plants. When D. suzukii females were exposed to lime sulfur-treated plants in no-choice bioassays, oviposition was significantly (t-test, P < 0.05) reduced compared with that on untreated plants. In free-choice bioassays, D. suzukii females laid significantly (paired t-test, P < 0.05) more eggs on untreated plants. Furthermore, in the free-choice bioassays, immature development was slower for adults that originated from eggs laid on lime sulfur-treated plants than from those laid on untreated plants.
Conclusions
Lime sulfur showed adequate control and, therefore, has potential for use as a management tool against D. suzukii infestations in organic production systems. This old, alternative insecticide preparation not only caused adult fly mortality, but also reduced the number of eggs laid on lime sulfur-treated plants.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Felipe Andreazza

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Drosophila suzukii