Agronomy Library > Soil Conservation

Yellow Toadflax Control in Direct Seeding Systems
Author: Murray Hartman, Peter Gamache and Mirza N. Baig
Date Created: June 04, 2004
Last Reviewed: June 04, 2004

Yellow toadflax (Linaria vulgaris Mill.) is a shallow-rooted creeping perennial broadleaf weed. In recent years, it has become an increasing troublesome weed in annual cropping systems across western Canada. Its rapid increase on cropland is associated with adaptation of reduced tillage practices, continuous cropping, and its ability to spread by both seed and vegetative propagation. Yellow toadflax is very competitive and reduces the yield of many field crops. In canola and wheat, infestations of 12 and 74 yellow toadflax stem m – 2 respectively, reduced yields by 20% (O’Donovan and McClay 1987; O’Donovan and Newman 1989). Also, this weed contains alkaloids and glycosides that can be harmful to livestock.

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