Report to the Oregon Processed Vegetable Commission
Ed Peachey and Bob McReynolds
OSU Dept. of Horticulture
- compare crop tolerance of carrots and parsnips to two soil and early postemergent herbicides. Dual Magnum (s-metolachlor) was recently registered for use on root crops, but provides poor control of hairy nightshade, and loses effectiveness if rainfall is excessive after application.