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Published July 12, 2012, 12:00 AM

Spotted knapweed


Becker County Ag Inspector Marsha Watland demonstrates how she collects the tiny weevils that are used to control the noxious weed known as spotted knapweed. The weevils are placed on the weeds, where they lay their eggs and eventually destroy the plants. Vicki Gerdes/DL Newspapers
Read the article: Tiny weevils new weapon in war on noxious weeds