Herbicide labels change continually. Always read the label of the specific product to determine current registered uses. No one herbicide program is best for all situations. In addition, continued reliance on a single program can lead to severe problems. The development of triazine-resistant weeds across the state is an example.
Tillage can be an important component of a weed management system.
Primary tillage can help reduce the rate of spread of certain perennials such as hemp dogbane. Row cultivation also can be used to help control weeds and reduce herbicide dependency. Crop residue left on the surface in no-till and reduced tillage plantings may interfere with the activity of preemergence herbicides, resulting in the need for extra applications. The herbicide effectiveness ratings listed here may be used as a guideline for comparing herbicides. Results obtained by individual farmers depend on environmental conditions, rates used, application techniques, and severity of weed pressure.