Field evaluations of emamectin benzoate for control of birch leafminer (Hymenoptera: Tenthredinidae) in Interior Alaska

Christopher J. Fettig; Roger E. Burnside; Christopher J. Hayes; Mark E. Schultz

Treesearch

Field evaluations of emamectin benzoate for control of birch leafminer (Hymenoptera: Tenthredinidae) in Interior Alaska

Formally Refereed

Authors:

Christopher J. Fettig, Roger E. Burnside, Christopher J. Hayes, Mark E. Schultz

Year:

2012

Type:

Scientific Journal

Station:

Pacific Southwest Research Station

Source:

Journal of Entomological Science 46(4): 339-341

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Abstract

Ambermarked birch leafminer, Profenusa thomsoni (Konow) (Hymenoptera: Tenthredinidae), is an exotic, invasive pest of urban and wildland birch, Betula spp., in portions of North America. Extensive defoliation of ornamental birch in Alaska requires that suitable control measures be evaluated and developed. Based on previous work, we evaluated the efficacy of emamectin benzoate (TREE-äge ®, Syngenta Crop Protection LLC, Greensboro, NC) for control of P. thomsoni in Interior Alaska. TREE-äge ® significantly reduced crown damage (percent leaf mining) compared to the untreated control. It appears that TREE-äge ® holds promise for control of P. thomsoni on individual birch trees in Interior Alaska, and should be further evaluated for this use.

Keywords

Ambermarked birch leafminer, Betula papyrifera, insecticides, paper birch, Profenusa thomsoni, tree injections

Citation

Fettig, Christopher J.; Burnside, Roger E.; Hayes, Christopher J.; Schultz, Mark E. 2011. Field evaluations of emamectin benzoate for control of birch leafminer (Hymenoptera: Tenthredinidae) in Interior Alaska. Journal of Entomological Science 46(4): 339-341.