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Title: Microbial control of Agrilus planipennis (Coleoptera: Buprestidae) with Beauveria bassiana strain GHA: field applications

Author: Liu, Houping; Bauer, Leah S.;

Date: 2008

Source: Biocontrol Science and Technology. 18(6): 571-585.

Publication Series: Scientific Journal (JRNL)

Description: The effects of Beauveria bassiana strain GHA, applied as BotaniGard ES, on newly colonised and well-established populations of emerald ash borer, Agrilus planipennis (Coleoptera: Buprestidae) were evaluated in the field using foliar and trunk sprays in Michigan in 2004-2005. Results from field trials at a newly colonised white ash site showed a 41% reduction in A. planipennis population in fungal-treated trees compared with that of untreated controls. In addition, fungal infection was also found in 20% of the larval population within 14 days of incubation under laboratory conditions. At a site with a well-established A. planipennis population in green ash trees, larval density was reduced by 47% for trees treated with the fungus compared with that of the controls; 21% of larvae from the current generation were found infected after 14 days of laboratory incubation. Fungal-treated green ash trees also produced fewer adults emerging in the next generation, with a 63% reduction in adult density observed in treated trees compared to that of controls. As a result, fungal-treated trees sustained 42% less crown dieback than did controls. Agrilus planipennis larval density was negatively correlated with trunk height above the ground, and positively correlated with log diameter.

Keywords: emerald ash borer, Agrilus planipennis, Beauveria bassiana strain GHA, conidial persistence, field applications, microbial control

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Citation:


Liu, Houping; Bauer, Leah S. 2008. Microbial control of Agrilus planipennis (Coleoptera: Buprestidae) with Beauveria bassiana strain GHA: field applications. Biocontrol Science and Technology. 18(6): 571-585.

 


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