Integrated Pest Management for Raspberries

A Guide for Sampling and Decision-Making for Key Raspberry Pests in Northwest Washington

The above chart shows pheromone trap catch results for obliquebanded leafroller moths in a raspberry field in Whatcom County during 1997. Note that the first peak flight occurs just prior to harvest. Caterpillars from this first summer generation would likely hatch in mid-July. It is this stge which can be a harvest contaminant. Key periods to scout for caterpillars are late April through mid-May (overwintering caterpillars) and about two weeks after peak flight of the first generation. Sprays are directed at the caterpillar rather than the adult stage. (Data courtesy of WSU Nooksack IPM project.)

G.W. Menzies & C.B. MacConnell, WSU Cooperative Extension Whatcom County
June 1998

Funded in part by: Washington State Department of Ecology through U.S. Environmental Protection Agency, Section 319 Funds