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Surface-applied insecticide treatments for quarantine control of Japanese beetle, Popillia japonica Newman (Coleoptera: Scarabaeidae), larvae in field-grown nursery plants
- Abstract::
- BACKGROUND: Japanese beetles, Popillia japonica Newman, are a quarantine challenge for nursery shipments from infested to non-infested states. Marathon (imidacloprid) and Discus (imidacloprid + cyfluthrin) are approved preharvest nursery treatments (US Domestic Japanese Beetle Harmonization Plan; DJHP). This study evaluated approved and non-approved (acephate, carbaryl, clothianidin, dinotefuran, halofenozide, thiamethoxam, trichlorfon) preharvest treatments, optimal rates (labeled 1x, 0.3-0.75x or 2-3x) and optimal timings (June, July, August and September) to control early-instar (grubs) P. japonica in field nurseries.RESULTS: Most insecticides effectively reduced grub densities, except for acephate, carbaryl and trichlorfon. Clothianidin, thiamethoxam and halofenozide provided grub control equivalent to DJHP standards during most years. Across all test years and timings, percentage grub reductions were: Marathon (1x: 59.2-100; 3x: 78.9-100), Discus (1x: 60.7-100), clothianidin (1x: 96.1-100; 3x: 97.4-100), thiamethoxam (1x: 75.0-100; 3x: 80.0-100), halofenozide (1x: 70.0-100; 3x: 90.0-100) and dinotefuran (1x: 13.2-88.2; 3x: 71.1-93.4).CONCLUSIONS: July application was more consistent and effective than other timings, and higher rates (2x and 3x) did not generally improve grub control. Overall, clothianidin, thiamethoxam and halofenozide (and dinotefuran applied in August) were equivalent to current DJHP standards. These insecticides may be suitable for DJHP Category 2 states, potentially lowering grower costs.
- Author(s):
-
Oliver, Jason B. , Reding, Michael E. , Youssef, Nadeer N. , Klein, Michael G. , Bishop, Bert L. , Lewis, Phil A.
- Subject(s):
-
Popillia japonica , insect pests , plant pests , nursery crops , ornamental plants , quarantine , larvae , insect control , insecticides , application rate , pesticides , imidacloprid , cyfluthrin , population density , application timing , Tennessee
- Description:
- Includes references
- Source:
- Pest management science 2009 Apr., v. 65, no. 4
- Language:
- English
- Year:
- 2009
- Publisher:
- John Wiley & Sons, Ltd.
- Collection:
-
Journal Articles, USDA Authors, Peer-Reviewed
- File:
-
Download [PDF]
- Rights:
- Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
