Under no-till, however, thorough soil incorporation is not possible. Rainfall after surface application of diclofop is then necessary to move the herbicide into the soil for effective weed control. Results from this first year of research look promising. American Hoechst has expressed interest in a registration label change for preemergence nonincorporated application of diclofop on no-till winter wheat. This particular use of Hoelon is not presently registered.
More work needs to be done.
These herbicide developments offer some bright future prospects for grassy weed control in no-till. This, along with other important crop management options such as longer crop rotations with spring crops, should help to enhance the adoption of no-till in the Pacific Northwest. Use of Trade Names Research results are given for information only and are not to be construed as a recommendation for an unregistered use of a pesticide. Always read and follow label instructions carefully. To simplify the information, trade names have been used.