Reduced spray programs for <i>Drosophila suzukii</i> management in berry crops

Klick, Jimmy; Yang, Wei Qiang; Lee, Jana C.; Bruck, Denny J.

doi:10.1080/09670874.2016.1222105

Cited by 17 publications

(22 citation statements)

References 35 publications

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“…Klick et al . reported that plots receiving reduced applications of less‐effective insecticide compounds suffered numerically greater damage from D. suzukii larvae . However, the infestation data reported by Klick et al .…”

Section: Discussionsupporting

confidence: 89%

“…Klick et al . found a significant increase in larval infestation due to precipitation events, signaling increased D. suzukii infestation risk when such climatic events come into play …”

Section: Discussionmentioning

confidence: 99%

“…The farm gate value of blueberry fruit was approximately US $105 million in Oregon and $94 million in Washington in the USA . Currently, D. suzukii poses the biggest challenge to blueberry in all United States production regions …”

Section: Introductionmentioning

confidence: 99%

“…Several sprayer types are used by growers, with air‐assisted sprayers the most commonly used to date. In some cases, growers opt to use cannon, electrostatic and air‐blast sprayers . Air‐blast sprayers are the most commonly used air‐assisted sprayers due to their ability to produce even and high deposition levels on the crop canopy.…”

Section: Introductionmentioning

confidence: 99%

“…Insecticide droplets from nozzles are transferred to the canopy by high inertial air movement created by an air‐blast axial fan . Cannon sprayers are often used for border spray applications to limit canopy disruption and minimize application time . Cannon sprayers are intended to spray 30‐m swaths, which can be applied along crop perimeters as opposed to spraying the entire field block.…”

Section: Introductionmentioning

confidence: 99%

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Canopy spray deposition and related mortality impacts of commonly used insecticides on Drosophila suzukii Matsumura (Diptera: Drosophilidae) populations in blueberry

Mermer

Pfab

Hoheisel

et al. 2019

Pest Management Science

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BACKGROUND Insecticide applications in blueberry production systems play a crucial role in the control of Drosophila suzukii populations. Here, quantitative spray deposition patterns were obtained under replicated field experiments in blueberry during two field seasons with three sprayers, i.e. cannon, electrostatic, and air‐blast. Seven insecticides were tested (at 6 hours using a Potter spray tower) to determine the mortality data for adult D. suzukii. Spray deposition and mortality data for adult D. suzukii were used to create model simulations for insect populations. Model simulations included field deposition rates of sprayers and insecticide mortality as factors. Simulations were applied in different combinations with five applications over a 6‐week period. RESULTS Relative deposition rates for the cannon sprayer were elevated in the upper zones of the canopy, whereas for the air‐blast sprayer, deposition was greater in the bottom zones. Electrostatic spray deposition was relatively uniform within the six canopy zones. Clear trends in D. suzukii laboratory mortality were found with lowest to highest mortality recorded for phosmet, spinetoram, spinosad, malathion, cyantraniliprole, zeta‐cypermethrin, and methomyl respectively. Maximum D. suzukii population impacts, as shown by model outputs, were observed with air‐blast sprayers together with zeta‐cypermethrin. CONCLUSION The electrostatic sprayer had the least variable canopy deposition among the three types of spray equipment, and the air‐blast sprayer had the highest overall deposition rates. This study provides new hypotheses that can be used for field verification with these spray technologies and insecticides as key factors. © 2019 Society of Chemical Industry

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Section: Discussionsupporting

confidence: 89%

“…Klick et al . found a significant increase in larval infestation due to precipitation events, signaling increased D. suzukii infestation risk when such climatic events come into play …”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Canopy spray deposition and related mortality impacts of commonly used insecticides on Drosophila suzukii Matsumura (Diptera: Drosophilidae) populations in blueberry

Mermer

Pfab

Hoheisel

et al. 2019

Pest Management Science

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Identification and functional analysis of dsRNases in spotted‐wing drosophila, Drosophila suzukii

Yoon

Ahn

Flinn

et al. 2021

Arch Insect Biochem Physiol

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RNAi efficiency in insects is different from species to species; some species in Coleoptera are relatively more amenable to RNA interference (RNAi) than other species.One of the major factors is the presence of dsRNAdegrading enzymes, called dsRNases, in saliva, gut, or hemolymph in insects, which degrade the double-stranded RNA (dsRNA) introduced, resulting in the low efficacy of RNAi. In this study, we report a dsRNA-degrading activity in the gut homogenates from the spotted-wing drosophila, Drosophila suzukii, by ex vivo assay. Then, we identified two Drosophila suzukii dsRNase genes, named DrosudsRNase1 and DrosudsRNase2. In silico analysis shows that the gene structures are similar to dsRNases found in other insects.When dsRNases expressed in Sf9 cells were compared for their dsRNA degrading activities, dsRNase1 was more vital than dsRNase2. Both dsRNases were expressed highly and exclusively in the gut compared to the rest of body. Also, they were highly expressed during larval and adult stages but not in embryonic and pupal stages, suggesting the dsRNases protect foreign RNA molecules received during the feeding periods. DsRNase1 was expressed at a higher level in adults, whereas dsRNase2 showed more expression in early larvae. Our study on the tissue and development-This article has been contributed to by US Government employees and their work is in the public domain in the USA.

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Spotted Wing Drosophila Prefer Low Hanging Fruit: Insights into Foraging Behavior and Management Strategies

et al. 2017

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Reduced spray programs for Drosophila suzukii management in berry crops

Cited by 17 publications

References 35 publications

Canopy spray deposition and related mortality impacts of commonly used insecticides on Drosophila suzukii Matsumura (Diptera: Drosophilidae) populations in blueberry

Canopy spray deposition and related mortality impacts of commonly used insecticides on Drosophila suzukii Matsumura (Diptera: Drosophilidae) populations in blueberry

Identification and functional analysis of dsRNases in spotted‐wing drosophila, Drosophila suzukii

Spotted Wing Drosophila Prefer Low Hanging Fruit: Insights into Foraging Behavior and Management Strategies

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