Journal of Entomological Science (2017) 52, 274-287

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J.B. Oliver, C.M. Ranger, M.E. Reding, N.N. Youssef and J.J. Moyseenko (2017)
Insecticides and their combinations evaluated as regulatory immersion treatments for third-instar Japanese beetle (Coleoptera: Scarabaeidae) in field-grown and containerized nursery plants
Journal of Entomological Science 52 (3), 274-287
Abstract: Japanese beetles, Popillia japonica Newman, are nursery regulatory pests. Currently, immersion of balled-and-burlapped (BandB) and containerized plants grown in pine bark substrates in a chlorpyrifos or bifenthrin solution satisfies the Domestic Japanese Beetle Harmonization Plan (DJHP) for shipping plants to noninfested states. Study objectives were to (a) evaluate individual and combination insecticide treatments for potential as regulatory dips against third-instar P. japonica in 30-cm BandB and no. 3 containers and (b) determine the lowest effective rates. Tests were performed fall and spring from 2007 to 2010. In all BandB tests and most container tests, insecticide treatments had significantly fewer larvae than the untreated check. Treatments also were more effective during spring tests than fall tests. The highest rate of a bifenthrin + imidacloprid combination was the only treatment that consistently met the DJHP regulatory standard of no larvae recovered across multiple tests. During spring tests with BandB and container plants, all rates tested of bifenthrin, bifenthrin + carbaryl, chlorantraniliprole, clothianidin, or dinotefuran met the no-larval-recovery DJHP standard. The lowest effective bifenthrin rate during spring tests was 9× lower than the current DJHP bifenthrin dip rate. Several treatments in this study met DJHP regulatory standards for dipping BandB and containerized plants and during spring timings bifenthrin alone or in combination with carbaryl or imidacloprid was effective at rates lower than currently allowed in the DJHP.
(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): Jason B. Oliver

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

Pest and/or beneficial records:

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


Popillia japonica
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