Group 5 and Group 15 herbicide
Mode of Action
Boundary LQD contains the active ingredients S-Metolachlor (and R-enantiomer) and Metribuzin. S-metolachlor (Group 15) is a selective herbicide that restricts root and shoot development, so weeds fail to grow.
Metribuzin (Group 5) is a photosynthesis inhibitor.
For resistance management, please note that the components in Boundary LQD contain both a Group 5 and a Group 15 herbicide. Any weed population may contain or develop plants naturally resistant to Group 5 and/or Group 15 herbicides. Where possible, rotate the use of Boundary LQD or other Group 5 and 15 herbicides with different herbicide groups that control the same weeds in a field.
Use tank mixtures with herbicides from a different group when such use is permitted.