Devrinol 50 DF can also be applied in the fall to freshly tilled ground to control winter annual weeds. In fruiting years, do not apply this product after first bloom. Or Apply simazine at 0.5 pounds a.i. per acre after planting, once the soil has settled around the plants. Simazine is most effective if applied before weed emergence and controls annual broadleaf weeds emerging from seed. In subsequent years, use 1.0 pounds a.i. per acre.
Various formulations are available, and product rates for use in the planting year are provided.
Or Apply Surflan A.S. at 2 to 6 quarts per acre after planting and before seedling weeds emerge. Length of control varies with rate used. Surflan controls a number of annual grasses and broadleaf weeds emerging from seed. A 0.5 to 1 inch of rain or irrigation is required within 21 days to activate the herbicide. Surflan can be used in subsequent years as well.