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An old insect pest reemerges in organic orchards

Date:
September 28, 2012
Source:
Entomological Society of America
Summary:
A new article offers information and methods of managing the apple flea weevil.

The apple flea weevil, a sporadic insect pest in the early 1900s, has reemerged as a severe pest in organic apple orchards in Michigan.
Credit: Image courtesy of Entomological Society of America

The apple flea weevil, a sporadic insect pest in the early 1900s, has reemerged as a severe pest in organic apple orchards in Michigan, where outbreak population levels have been observed since 2008, and damage has resulted in up to 90% losses for apple growers.

According to the authors of "The Reemergence of an Old Pest, Orchestes pallicornis (Coleoptera: Curculionidae)," an open-access article appearing in the lastest issue of the Journal of Integrated Pest Management, the weevil can be managed by broad-spectrum insecticides used in conventional agriculture, but there are currently no proven management options for use in organic production. And, as broad-spectrum materials are replaced by reduced-risk compounds, it is possible that the apple flea weevil will increasingly become an important pest in apple production.

The apple flea weevil is a small, 2-3 millimeter black weevil with enlarged high legs for jumping. Adults feed on buds and leaves, and the larvae are leaf miners.

In the article, the authors discuss the apple flea weevil's biology and the damage it does to plants, as well as methods for growers to monitor and manage them.


Story Source:

The above story is based on materials provided by Entomological Society of America. Note: Materials may be edited for content and length.


Journal Reference:

  1. Nielsen, Anne L.; Pote, John; Buehrer, Krista; Grieshop, Matthew J. The Reemergence of an Old Pest, Orchestes pallicornis (Coleoptera: Curculionidae). Journal of Integrated Pest Management, Volume 3, Number 3, 2012 , pp. D1-D4(4) DOI: 10.1603/IPM12009

Cite This Page:

Entomological Society of America. "An old insect pest reemerges in organic orchards." ScienceDaily. ScienceDaily, 28 September 2012. <www.sciencedaily.com/releases/2012/09/120928141056.htm>.
Entomological Society of America. (2012, September 28). An old insect pest reemerges in organic orchards. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2012/09/120928141056.htm
Entomological Society of America. "An old insect pest reemerges in organic orchards." ScienceDaily. www.sciencedaily.com/releases/2012/09/120928141056.htm (accessed August 22, 2014).

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