Section 2 Table of Contents

Table 2.2-14

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 0.5 pt—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
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.
Buctril + atrazine 1.5 to 2 pts—emergence to 12" tall 3 pt—4 leaves 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 weeks before tassel emergence.
Equip Up to 12" tall >12" to 36" (>V4 but <V8 growth stage)
Glyphosate products Up to 30" tall (V8 stage) Apply to Roundup Ready hybrids only.
Halex GT Emergence to 30" tall (8-leaf stage)
Harmony SG 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" to 36" tall (V6)
Impact Up to 45 days prior to corn harvest When necessary
Laddok S-12 Spike to 7 leaves or up to 12" tall
Laudis Emergence up to V8 stage
Liberty/Ignite 280 Emergence to V5 (5 developed collars) >20" to36" 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 not 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.
Ready Master ATZ Up to 12" tall Apply to Roundup Ready hybrids only.
Require Q >4" to <20" tall
Resolve Up to 12" tall (<6 collars)
Resolve Q Up to 20" tall
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
Status 4" to 36" tall (V2–V10) Do not apply within 15 days before tassel emergence.
Steadfast Up to 20" tall (6 collars) Best if applied when corn is <12" tall.
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.
Yukon Spike to 36" tall When necessary