There are a number of major considerations with regards to weed management in 1990. Several weed species have been identified as potentially serious statewide problems. Herbicide carryover has the potential to be an issue in 1990 and should be considered seriously as decisions are made for crop rotation, tillage, and herbicide selection. Finally, there are several herbicide candidates that demonstrate significant weed control and may impact overall weed management choices in 1990.