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Weed Management
Weed Management - Weed science extension program at Penn State for agronomic crops, but has good links to invasive plants, other weed science programs, herbicide information, and pesticide label web sites.
Publications - Weed Management's listing of Penn State weed publications available either free or for a charge.
Directory For Invasive Weeds of the Northeast
Other Weed Web Sites:
Identification of the Weedy Pigweeds and Waterhemps - Iowa State University
Print Resources for Weed ID - Iowa State University
Weed Seedling Identification - Iowa State University
Common Weed Seedlings of Michigan - Michigan State University
Photo Herbarium - Weed Science Society of America
Common Weeds of No-till Cropping Systems - Purdue University
New Jersey Weed Gallery - Rutgers University
Idaho Noxious Weeds
Kansas Noxious Weeds - Kansas Dept. of Ag
Weed ID - FMC