Weed Control Guide for Ohio Field Crops

Corn: Soil-Applied Herbicides Preplant or Preemergence

Herbicide	Formulation	Product Rate Range
Surpass	6.4EC	1 - 3 pt
TopNotch	3.2L	2 - 3 3/4 qt

Tank-mix with: Atrazine, Princep, Prowl, Sencor, Lorox, 2,4-D, Accent, Banvel, Clarity, Beacon, Basis, Marksman, Hornet, Sencor, Basis Gold, Scorpion III, Resource.

• Surpass and TopNotch (actetochlor plus safener) control annual grasses, pigweed, and black nightshade, and control or suppress yellow nutsedge, lambsquarters, and common ragweed. Control of lambsquarters and common ragweed will generally be less effective compared to most broadleaf herbicides, but more effective than Dual, Frontier, and alachlor products.
• Mode of action: shoot meristem inhibitor.
• TopNotch is an encapsulated formulation, which may provide more consistent control in conservation tillage.
• Surpass may be applied up to 30 days before planting as a single application. TopNotch may be applied up to 40 days before planting as a single application. Application rates increase when applied more than 10 days before planting.
• Can be applied after planting but prior to weed emergence, and before corn height exceeds 11 inches. Do not apply using fertilizer solution as the carrier when tankmixing with other herbicides. If weeds have emerged, tank-mix with herbicides that have postemergence activity. When tank-mixing with postemergence herbicides, follow the most restrictive label with regard to maximum corn size.

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