Library

  • Open in new window

    Biology and Control of Douglas-fir Needle Midge in Christmas Trees

    Jack DeAngelis (July, 1994)
    Summary

    The Douglas-fir needle midge can be a very destructive pest of Douglas-fir. Infestation of new needles can be as high as 100 percent. Severe infestations can cause intolerable needle loss, and trees may take several years to recover. Needle loss is an especially serious problem in Christmas trees because of the aesthetic value of these trees.

    Views: 1021

    Go to Item

    Bookmark

    Report

  • Details

    Organization
    		 Oregon State University Extension
    Publisher
    		 Oregon State University
    Published
    		 July, 1994
    Material Type
    		 Written Material

  • Filed Under

    1. Production
    2. Forests-Trees-Ornamentals
Return