Record Details

Impacts on Natural Enemies and Competitor Thrips of Insecticides against the Western Flower Thrips (Thysanoptera: Thripidae) in Fruiting Vegetables

ScholarsArchive at Oregon State University

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Title Impacts on Natural Enemies and Competitor Thrips of Insecticides against the Western Flower Thrips (Thysanoptera: Thripidae) in Fruiting Vegetables
Names Srivastava, Mrittunjai (creator)
Funderburk, Joe (creator)
Olson, Steve (creator)
Demirozer, Ozan (creator)
Reitz, Stuart (creator)
Date Issued 2014-06 (iso8601)
Note This is the publisher’s final pdf. The published article is copyrighted by the Florida Entomological Society and can be found at: http://www.bioone.org/loi/flen.
Abstract Newer, selective insecticides with few negative impacts on natural enemies and competitor
species are needed for effective, sustainable management of the western flower thrips,
Frankliniella occidentalis (Pergande). The purpose of this study was to evaluate the impacts
on natural enemies and competitor thrips species of insecticides used for control of
western flower thrips in fruiting vegetables. Trials with tomato (Solanum lycopersicum L.)
and with pepper (Capsicum annuum L.) were conducted to evaluate insecticide treatment
effects on western flower thrips and natural enemies at the North Florida in 2008, 2009,
2010 and 2011. A number of insecticides from different classes showed moderate to high efficacy
against western flower thrips. The broad-spectrum insecticides acetamiprid, methomyl,
and tolfenpyrad demonstrated activity against the pest, while also reducing populations
of the key predator of thrips in pepper, Orius insidiosus (Say) (Hemiptera: Anthocoridae).
Insecticides that showed little impact on populations of O. insidiosus were cyantraniliprole,
flonicamid, spirotetramat, and terpenes. Although only moderately active against the western
flower thrips, they would be valuable additions to existing management programs for
pepper. Insecticides with activity against western flower thrips also showed activity against
Frankliniella tritici (Fitch). This non-damaging congener species is a beneficial because it
out-competes the western flower thrips, especially in tomato where O. insidiosus is not a
major factor in western flower thrips management. Numerous insecticides were identified
with activity against the western flower thrips that are suitable for use in integrated pest
management programs of fruiting vegetables.
Genre Article
Topic Reduced-risk insecticides
Identifier Srivastava, M., Funderburk, J., Olson, S., Demirozer, O., & Reitz, S. (2014). Impacts on Natural Enemies and Competitor Thrips of Insecticides against the Western Flower Thrips (Thysanoptera: Thripidae) in Fruiting Vegetables. Florida Entomologist, 97(2), 337-348. doi:10.1653/024.097.0201

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