Midwest Vegetable Guide - 2022 - 282

Sweet Corn - Weeds
organic matter greater than 3%. Apply up to 14 days before
planting or apply after planting but before corn emerges. Can
be combined with glyphosate or paraquat products to control
emerged weeds. REI: 24-hour. PHI: 60-day. HRAC 15,
HRAC 05, HRAC 27. RUP.
Liberty 280 SL (2.34) (glufosinate) POST
| Apply
29-43 fl. oz. per acre as a burndown application prior to
planting. For Liberty-Link sweet corn varieties only - will
kill other varieties: apply 22 fl. oz. per acre postemergence.
Do not exceed 2 postemergence applications per season.
Applications must be at least 7 days apart. Add AMS at 3 lb.
per acre. Also available as Interline herbicide. REI: 12-hour.
PHI: 50-day. HRAC 10.
Outlook (6) (dimethenamid-p) PRE
| 12-21 fl. oz.
per acre. Use lower rate on coarse soils low in organic matter.
Apply before planting and incorporate, or after planting
before corn emerges, or after emergence before corn is 12
inches tall. Apply preemergence for best activity. Do not
exceed 21 fl. oz. of Commit or 24 fl. oz. of Outlook per acre
per year. REI: 12-hour. PHI: 50-day. HRAC 15.
paraquat products (paraquat) POST
| 2-4 pt. per
acre of 2 lb. per gal. formulation or 1.3-2.7 pt. per acre of 3
lb. per gal. formulation. Add 1 qt. COC (1% v/v) or 0.5 pt.
NIS (0.25% v/v) per 25 gals. of solution. Apply before or
after seeding but before crop emerges. Or apply after crop
emergence and use a hooded or shielded sprayers to prevent
spray from contacting crop. Or wait until corn is more than
10 inches tall and apply between rows using directed spray
that reaches no higher than 3 inches up the corn stalk. Corn
plants contacted by spray may be injured or killed. Certified
applicators must successfully complete an EPA-approved
training program before mixing, loading, and/or applying
paraquat. REI: 12 to 24-hour. HRAC 22. RUP.
pendimethalin products (pendimethalin) PRE
|
Apply 3.3 lb. per gallon formulations at 1.8-4.8 pts. per acre
and 3.8 lb. a.i. per gallon formulations at 2-4 pts. per acre.
Use low rates on coarse soils with low organic matter. Apply
after planting but before corn emerges, or after emergence
until corn is 20-24 in. tall or shows 8 leaf collars. Plant corn
at least 1.5 inches deep and make sure seed is well covered.
Use drop nozzles and directed spray for post applications, if
necessary, to get spray to soil. Do not exceed one application
per season. REI: 24-hour. HRAC 03.
Poast (1.5EC) (sethoxydim) POST
| 0.75-1.5 pt. per
acre. Poast Protected sweet corn varieties only - will kill
other varieties. Add COC or MSO. UAN or AMS are
optional, see label. Allow at least 10 days between repeated
282
applications. Do not exceed 3 pt. per acre per growing
season. Poast Plus may be used instead at 1.5-2.25 pt. per
acre, not to exceed 4.5 pt. per acre per growing season. REI:
12-hour. PHI: 30-day. HRAC 01.
Revulin Q (nicosulfuron, mesotrione) POST
| 3.4
to 4.0 oz. per acre. Use with NIS after emergence until 12
inches tall or 5 leaf-collar stage. Use drop nozzles for corn
between 12 and 18 inches tall. Do not apply to sweet corn
taller than 18 inches or at 6 leaf-collar stage or later. Do not
use AMS or UAN adjuvants. Because of the adjuvant
restrictions, better results will be obtained when applied to
smaller weeds. Can use COC under dry conditions to improve
weed control, but may increase crop injury. Possible hybrid
sensitivity. REI: 12-hour. PHI: 45-day. HRAC 02, HRAC 27.
s-metolachlor plus atrazine products (atrazine, smetolachlor)
PRE
| Apply Bicep II Magnum,
Bicep II Magnum FC, Cinch ATZ, and Charger Max ATZ at
1.3-2.6 qts. per acre OR apply Bicep Lite II Magnum, Cinch
ATZ Lite, or Charger Max ATZ Lite at 0.9-2.2 qts. per acre.
Use low rates on coarse soils with low organic matter. Apply
before planting and incorporate, or after planting before corn
emerges, or after emergence before corn is 5 inches tall. REI:
24-hour. PHI: 30-day. HRAC 05, HRAC 15. RUP.
Sandea (75) (halosulfuron) POST PRE
| 2/3-1 oz.
per acre. Apply over-the-top or with drop nozzles from the
spike through layby stages. Has some soil residual activity. A
second application of 2/3 oz. per acre may be made only with
drop nozzles aimed to avoid application into whorls. Do not
exceed 2 applications per 12-month period. Additional
halosulfuron products are available. See labels for details.
REI: 12-hour. PHI: 30-day. HRAC 02.
Shieldex (3.33SC) (tolpyralate) POST
| 1-1.35 fl.
oz. per acre. Apply as a broadcast spray over corn when
weeds are small. Apply to corn up to 20 inches tall and
showing no more than 6 leaf collars. Use higher rate for
larger weeds. Add NIS or COC. Do not exceed 2 applications
per year or 2.7 fl. oz. per acre per year. REI: 12-hour. PHI:
35-day. HRAC 27.
Sinate (L) (topramezone, glufosinate) POST
| 21
fl. oz. per acre. Apply to LibertyLink sweetcorn only from
emergence to V6 stage of growth. Do not apply more than
once per year. Add MSO, COC, or high surfactant methylated
oil concentrate (HSMOC) and spray grade ammonium sulfate
(AMS). See label for additive rates. REI: 12-hour. PHI: 50day
for ears, 55-day for stover. HRAC 27, HRAC 10.
Midwest Veg Guide 2022
Midwest Vegetable Guide - 2022

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