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Pest Activity -- April 22, 2003Pest Activity > Pest Activity Archives > April 22, 2003 Welcome to the Woody Ornamental Pest Scouting Report for Western Pennsylvania for April 11 brought to you by Penn State Cooperative Extension.This message will be updated weekly with growing degree day counts and insect activity through the end of June. If you would like an email copy of this report, send your request to mcm2@psu.edu . As of April 9, the following growing degree days with a base temperature of 50 degrees have accumulated:
Eastern Tent CaterpillarsEastern Tent Caterpillars tents are 4-6 inches in length and the early instar larvae are 3/8" long. Hemlock Rust MitesHemlock Rust Mites remain active in Southwestern Pennsylvania at this time. Cooley Spruce Gall AdelgidsCooley Spruce Gall Adelgids in Westmoreland County are completely coveredwith white waxy strands closing the window for control for this insect until the Fall. White Pine WeevilsWhite Pine Weevils in Westmoreland County have started to lay eggs. European Pine SawflyEuropean Pine Sawfly in Westmoreland and Allegheny counties have hatched and the larvae are 1/4" in length at this time. Spruce Spider MitesSpruce Spider Mites found on Canadian Hemlock in the City of Pittsburgh have hatched.
The next scouting report will be on Friday, April 25. |
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