Where possible, rotate the use of Thumper® or other Group 4 & 6 herbicides with different herbicide groups that control the same weeds in the field.
When Thumper is tank mixed with Varro™, the combination provides three modes of action (Groups 2, 4 and 6) against broadleaf weeds. Combining differing modes of action has been identified as a very effective way to manage and reduce the potential for the development of resistant populations.