Biological Control Program for Cereal Leaf Beetle in Oregon, 2008 Barry B. Bai 1 , Richard A. Worth 1, Helmuth W. Rogg, and Gary Brown 2 1. Oregon Department of Agriculture, 635 Capitol St. NE, Salem, OR 97301 2. USDA, APHIS-PPQ, 6135 NE 80th Ave. #A-5, Portland, OR 97218. CLB Survey.
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Biological Control Program for Cereal Leaf Beetle in Oregon, 2008Barry B. Bai1, Richard A. Worth1,Helmuth W. Rogg,and Gary Brown21. Oregon Department of Agriculture, 635 Capitol St. NE, Salem, OR 973012. USDA, APHIS-PPQ, 6135 NE 80th Ave. #A-5, Portland, OR 97218
One new county was found positive in 2008
Eggs were collected from all three previous release areas or insectaries, including the insectary and a nearby field in Banks, the insectary field in Scholls, Washington County, and the two previous release fields in Scio, Linn Co. All samples were negative for Anaphes.
Host plants - Spring oats, barley and wheat
Note: counties with lowest parasitism rates were emphasized for releases.
Rates are partly dependent on collection time: see phenology chart.
Highest parasitism rates are still seen at the very end of the season, but Umatilla had very high rate during first T.j. generation.
*Assumes an average of 5 T. julis per CLB larva