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Susceptibility of cranberry girdler to entomopathogenic nematodes

Published online by Cambridge University Press:  31 May 2012

Louis Simard ,
Guy Bélair  and
Jacques Brodeur
Louis Simard
Affiliation:
Centre de Recherche en Horticulture, Département de phytologie, Université Laval, Sainte-Foy, Quebec, Canada G1K 7P4
Guy Bélair*
Affiliation:
Horticulture Research and Development Centre, Agriculture and Agri-Food Canada, St-Jean-sur-Richelieu, Quebec, Canada J3B 3E6
Jacques Brodeur
Affiliation:
Centre de Recherche en Horticulture, Département de phytologie, Université Laval, Sainte-Foy, Quebec, Canada G1K 7P4
*
1 Corresponding author (e-mail: belairg@em.agr.ca).
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Extract

The cranberry girdler, Chrysoteuchia topiaria (Zeller) (Lepidoptera: Pyralidae), is the most important sod webworm species attacking turfgrasses in Quebec, Canada (Simard 2001). Unlike other webworms, the cranberry girdler is rarely observed on grass blades but feeds on the crowns and roots in the thatch. Biopesticides based on a nematode–bacterium complex appear to hold promise as a means of controlling turfgrass insect pests, particularly those that colonize the thatch and the first few centimetres of soil (Potter 1998), such as the cranberry girdler (Georgis and Hague 1991). Our objective was to assess the susceptibility of the cranberry girdler to entomopathogenic nematodes. In the laboratory, we determined the LC50 values for four nematode species and evaluated the effect of contact time on host mortality.

Type
Articles
Information
The Canadian Entomologist , Volume 134 , Issue 3 , June 2002 , pp. 329 - 330
Copyright
Copyright © Entomological Society of Canada 2002

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