Section 2 Table of Contents

Table 2.2-14. Postemergence herbicide application restrictions for corn.

Herbicide Over-the-top application Use of drop nozzles Comments
2,4-D < 8" tall 0.5 pt - 8" to 36" tall Some 2,4-D formulations allow application up to tasseling.
Accent 20" tall (free standing) or
< 6 collars (V6 stage)
20" to 36" tall or
V6 to V10 stage
-
Aim Up to 8-leaf collar stage (V8) Up to 14-leaf collar stage Use drop nozzles or directed sprayers that target weeds but spray away from the corn whorl.
Atrazine 12" tall - -
Banvel or
Clarity
1 pt-8" tall or 5 leaves
0.5pt-8" to 36" tall or 15 days before tassel emergence
- Do not apply Banvel or Clarity near soybeans if corn is >24" tall, or if soybeans are >10" tall or have begun to bloom.
Basagran No restrictions - -
Basis Spike to 4 leaves (2 collars) or 0.5" to 6" tall - Do not apply to corn >6" tall or having 3 collars.
Basis Gold Up to 12" tall (6 collars) - Do not apply to corn >12" tall or exhibiting 6 collars
Beacon 4" to 20" tall (free-standing) For splits, 20" tall to before tassel emergence -
Buctril 1 pt - emergence to tassel, 1.5 pts - 4 leaves to tassel - Postemergence application before 3-leaf stage may result in corn leaf burn.
Butril + atrazine 1.5 to 2 pts - emergence to 12" tall, 3 pt - 4leaves to <12" tall - Postemergence application before 3-leaf stage may result in corn leaf burn.
Callisto Up to 30" tall (or 8-corn leaf stage) - -
Celebrity Plus 4" to 24" tall (free standing) or <6 collars (V6 stage) When necessary -
Curtail <8″ tall - -
Distinct 4" to 24" tall 24" to 30" tall Up to 2 weekds before tassel emergence
Equip Up to 12" tall >12" to 36" tall (>V6 but <V8 growth stage) -
Exceed 4" to 20" tall or 6 collars >20" to 30" tall -
Glyphosate products Up to 30" tall (V8 stage) - Apply to Roundup Ready hybrids only.
Harmony GT 2 to 6 leaves up to 12" tall (1 to 4 collars) - Do not apply to corn >12" tall or having 4 collars.
Hornet Emergence up to 20″ tall (V6) 20″-36″ (V6) -
Impact Up to 45 days prior to corn harvest When necessary -
Laddok S-12 Spike to 7 leaves or up to 12" tall - -
Liberty Emergence up to 24" tall or 7 collars (whichever comes first) >20" to 36" tall Apply to Liberty Link or GR corn hybrids only.
Liberty ATZ Emergence to 12" tall - Apply to Liberty Link or GR corn hybrids only.
Lightning Up to 20" tall When necessary Apply to IMI or CL corn hybrids only. Do no apply within 45 days of corn harvest.
Marksman Emergence to 5-leaf stage or up to 8" tall - -
NorthStar 4" to 20" or 6 collars >20" to 30" tall -
Option Emergence to 16" (V5 stage) >16" to 36" tall -
Permit Spike to 48" tall When necessary If tank-mixed: with 2,4-D, apply to corn up to 8" tall; with Banvel or Clarity, apply to corn up to 36" tall.
Pursuit No restrictions on label When necessary Apply to IMI or CL corn hybrids only. If tank-mixed, use most restrictive application timing.
Ready Master ATZ Up to 12" tall - Apply to Roundup Ready hybrids only.
Resolve Up to 12″ tall (<6 collars) - -
Resource 2-leaf to 10-leaf stage (collars must be visible) When necessary, to direct below corn leaves -
Roundup products Up to 30" tall (V8 stage) - Apply to Roundup Ready hybrids only.
Sencor Emergence to pretassel When necessary See tank-mix partner.
Shotgun Spike to 4 leaves or up to 8" tall 5 leaves or 8" to 12" tall -
Spirit 4" to 20" tall or 6 collars >20" to 24" tall -
Steadfast Up to 12" tall (6 collars) - -
Steadfast ATZ Up to 12" tall (6 collars) - -
Stout Up to 16″ tall (<6 collars) - -
Touchdown Emergence through V8 stage - Apply to Roundup Ready hybrids only.
Tough No restrictions on label When necessary Best to apply before 4-leaf stage of weeds, but can vary with tank-mix partner.
Yukon Spike to 36" tall When necessary -