Skip to Main Content
Distribution of trunk-injected 14C-imidacloprid in ash trees and effects on emerald ash borer (Coleoptera: Buprestidae) adultsAuthor(s): David Mota-Sánchez; Bert M. Cregg; Deborah G. McCullough; Therese M. Poland; Robert M. Hollingworth
Source: Crop Protection 28: 655-661.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
View PDF (313.0 KB)
DescriptionThe emerald ash borer (EAB), Agrilus planipennis (Coleoptera: Buprestidae) is a destructive exotic pest of North American ash (Fraxinus sp.) trees. Trunk injection of imidacloprid is commonly used to protect landscape ash trees from A. planipennis damage. Efficacy can vary and little is known about the distribution, accumulation and persistence of this compound in trees. Green ash (Fraxinus pennsylvanica) and white ash (Fraxinus americana) trees were injected with 25 µCi of 14C-imidacloprid plus non-labeled imidacloprid and were grown under water-sufficient and water stress conditions. Tree trunks, twigs, leaves and roots were sampled periodically for two years following injection. Imidacloprid concentrations did not vary (P> 0.05) between tree species or water treatments. Imidacloprid concentrations differed (P< 0.001) among plant tissue types, leaves had much greater concentrations (>30×) than any of the other plant tissues. Imidacloprid concentrations in leaves increased steadily throughout the first (2004) growing season, whereas in the year following injection (2005), little imidacloprid was detected in leaves. Samples from outer bark and phloem collected with a cork-borer at 1 m and 2 m above ground line had low levels of imidacloprid as did fine roots. This suggests that imidacloprid translocation occurred mainly in the xylem. When adult A. planipennis were fed leaves from trunk-injected trees, an average of 71% of beetles were killed or intoxicated in 2004 compared with an average of 24% in 2005. Ash species and water treatment had little effect on A. planipennis mortality in either year.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMota-Sánchez, David; Cregg, Bert M.; McCullough, Deborah G.; Poland, Therese M.; Hollingworth, Robert M. 2009. Distribution of trunk-injected 14C-imidacloprid in ash trees and effects on emerald ash borer (Coleoptera: Buprestidae) adults. Crop Protection 28: 655-661.
KeywordsAsh trees, Green ash, Fraxinus pennsylvanica Marsh., White ash, Fraxinus americana L., The emerald ash borer, Agrilus planipennis, 14C-imidacloprid, Translocation, Trunk injection
- Forest Health Monitoring in Vermont, 1996-1999
- Macronutrient deficiency symptoms in seedlings of four northern hardwoods.
- Proceedings of symposium on ash in North America
XML: View XML