Monitoring Program for Psila rosae (F.) (Diptera: Psilidae) in Southwestern British Columbia

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Abstract:

A vertical, four-sided vane trap consisting of sticky, yellow-painted cardboard was developed for monitoring the seasonal activity of Psila rosae (F.). These traps were as attractive to P. rosae as the Stevenson yellow-orange bristol-board trap. Vertical traps caught significantly more P. rosae than horizontal ones and catch increased linearly with trap size. Traps placed 5 to 10 cm above the carrot canopy caught significantly more P. rosae than traps at other heights. In commercial carrot fields, P. rosae catches were always greatest at the headland/crop interface. In areas with uniform P. rosae distribution, total catch increased linearly with trap density but the mean numbers per trap were not significantly different. A large variation in P. rosae population levels among fields suggests that growers would benefit most from a monitoring program implemented on the basis of individual fields.

Document Type: Research Article

Publication date: April 1, 1985

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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