Weed Control Guide for Ohio Field Crops

Corn: Soil-Applied Herbicides Preplant or Preemergence

Herbicide	Formulation	Product Rate Range
Sencor	75DF	2 - 5 1/3 oz
	SoluPak	2 - 5 1/3 oz
	4L	3 - 8 oz

Tank-mix with: Most other corn herbicides.

• Sencor (metribuzin) is labeled for application with other corn herbicides to improve residual control of broadleaf weeds, including lambsquarters, pigweed, common ragweed, Pennsylvania smartweed, and velvetleaf. In tank-mixes with 2,4-D, Gramoxone, or other photosynthetic inhibitor herbicides (atrazine, Bladex, Extrazine II), Sencor can also improve burndown of emerged weeds in no-till.
• Mode of action: photosynthesis inhibitor.
• Apply up to 30 days before planting, or after planting, but before corn emergence. Application rates increase when applied more than 10 days before planting.
• Observe the following precautions to avoid corn injury: Do not apply where soil pH is 7.0 or greater or on coarse-textured soils with less than 1 1/2% organic matter; do not apply more than 4 ounces/A of Sencor DF on soils with less than 2% organic matter; plant corn seed at least 1 1/2 inches deep.
• This application of Sencor can be used on field corn and in hybrid seed corn production fields. Both inbred lines should have known tolerance to Sencor before using in seed production.

Back | Forward | Table of Contents