Weed Control Guide for Ohio Field Crops

Corn: Postemergence Herbicides - Systemic

Herbicide	Formulation	Product Rate Range
2,4-D LV Ester	4 lb/gal	1/3 - 1/2 pt
2,4-D Amine	4 lb/gal	2/3 - 1 pt

Tank-mix with: Atrazine, Banvel, Buctril/Moxy, Accent, Beacon, Sencor, Permit, Exceed.

• Mode of action: growth regulator.
• Controls many annual broadleaf weeds, including ragweeds, cocklebur, lambsquarters, and pigweed. Will control or suppress perennial broadleaf weeds, especially when applied with Beacon, Exceed, or Permit.
• For best results, apply when weeds are small.
• If corn is more than 8 inches tall, use drop nozzles to reduce the risk of crop injury. Do not apply from the tasseling stage to the dough stage.
• Use precautions to prevent drift. The ester forms of 2,4-D can volatilize and injure nearby susceptible plants, including soybeans and vegetable crops. Vapor movement is more likely with high-volatile esters than low-volatile esters and is much reduced with the amine.
• Injury may result when applied to corn growing rapidly under high temperatures and high humidity. Corn may be brittle for 7 to 10 days after application, and is susceptible to stalk breakage from high winds or cultivation.

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