For resistance management, Roundup® Ridder RTU is a group code G herbicide. Any weed population may contain individuals naturally resistant to roundup ridder RTU and other group code G herbicides. The resistant individuals can eventually dominate the weed population if these herbicides are used repeatedly. These resistant weeds may not be controlled by roundup ridder RTU or any other group code G herbicide. To delay herbicide resistance: Avoid exclusive repeated use of herbicides from the same herbicide group code. Alternate or tank mix with registered products from different herbicide group codes. Integrate other control methods (chemical, cultural, biological) into weed control programmes. For specific information on resistance management contact the registration holder of this product.