Increased Range Forage Production by Reseeding and the Chemical Control of Knapweed

Diffuse knapweed and spotted knapweed on the lower ranges of the interior of British Columbia can be controlled by 8 oz/acre of picloram (4 amino-3,5,6, trichloropicolinic acid). Crested wheatgrass was not seriously affected by the chemical. Crested wheatgrass significantly increased forage production over the check areas when protected from grazing by domestic animals.