New Zealand Plant Protection 68 (2015): 139-145
Clover root weevil (Sitona obsoletus) (CRW) is of Palearctic origin and in New Zealand has become an invasive pest of white clover. A major survey was undertaken in 2000 to identify and collect the most promising CRW biocontrol agents from a wide range of locations in Europe and the UK. Subsequently several Beauveria bassiana strains obtained from the cadavers of weevils originally collected live from England, Wales, France and Romania were isolated in containment at AgResearch, Lincoln. Thereafter bioassays using New Zealand field-collected CRW populations showed that all the European isolates were virulent against the adults, with two being particularly effective. Notably, all of the European B. bassiana isolates exhibited greater virulence against CRW than a New Zealand isolate collected from local CRW populations and a commercial B. bassiana product registered in the USA as Botanigard®.
Keywords: virulence, microbial control, entomopathogenic fungi, biological control, entomopathogens.
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|Field application of biopolymer-coated Beauveria bassiana F418 for clover root weevil (Sitona lepidus) control in Waikato and Manawatu|
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New Zealand Plant Protection 59: 304-311
|Establishing the fungus Beauveria bassiana in pasture for clover root weevil (Sitona lepidus) control|
T.L. Nelson, B.E. Willoughby, D. Wilson, T. Eden and T.R. Glare (2004)
New Zealand Plant Protection 57: 314-318
|Beauveria bassiana as a potential biocontrol agent against the clover root weevil, Sitona lepidus.|
B.E. Willoughby, T.R. Glare, F.J. Kettlewell and T.L. Nelson (1998)
Proceedings of the NZ Plant Protection Conference 51: 9-15
Copyright © 2015 New Zealand Plant Protection Society (Inc.).