Southeastern U.S. Vegetable Crop Handbook - 2023 - 339

WEED CONTROL
TABLE 4-9. CHEMICAL WEED CONTROL IN CORN, SWEET (CONT'D)
Weed
Herbicide,
Mode of Action Code*
and Formulation
CORN, SWEET, Preemergence
Broadleaf weeds and
some annual grasses
caprylic acid, MOA 26
(Homeplate)
Amount of
Formulation
Per Acre
See label
Pounds Active
Ingredient
Per Acre
See label
Precautions and Remarks
May be applied prior to planting as a burndown treatment for emerged
weeds, as a preemergence application after seeding but before
emergence, as a directed or shielded application between rows or as a
postharvest application. Use higher spray volumes for high weed density
and weeds larger than 5 in. Coverage is important for acceptable weed
control. May be tank mixed with other herbicides. See label for further
instructions.
Broadleaf weeds
Most annual grass
weeds, including fall
panicum, broadleaf
signalgrass, and
small-seeded broadleaf
weeds
2,4-D amine 4, MOA 4
(various brands)
dimethenamid-P, MOA 15
(Outlook) 6.0 EC
metolachlor, MOA 15
(Me-Too-Lachlor II) 7.8 EC
(Parallel) 7.8 EC
S-metolachlor, MOA 15
(Brawl II, Dual II Magnum,
Medal II) 7.64 EC
pyroxasulfone, MOA 15
(Zidua) 85 WG
0.5 to 1
1 to 3 pt
0.56 to 1.0
12 to 21 oz
1 to 2 pt
1 to 2 pt
1 to 2 pt
May be tank mixed with glyphosate for broad-spectrum weed control including
glyphosate-resistant horseweed (marestail). See label for planting
restrictions if applied prior to planting.
Apply to soil surface immediately after planting. May be tank mixed with
atrazine, glyphosate, or paraquat. See label for other herbicides that may
be tank mixed to broaden weed control spectrum.
0.98 to 1.98 See comments for S-metolachlor products. Products containing S-metolachlor
are more active on weeds per unit of formulated product than
those containing metolachlor. See label for all instructions.
0.95 to 1.91 Apply to soil surface immediately after planting. May be tank mixed with
atrazine, glyphosate, or simazine. Check label for directions. Rate is
soil-texture and organic-matter dependent. See label for details. Dual II
Magnum contains the corn safener benoxacor, thus is safer on sweet
corn than Dual Magnum, which does not contain benoxacor.
1.5 to 4 oz
0.0796 to 0.213 Rate ranges based on soil texture. See label for specific rate relating to
your fields. Sweetcorn seed must be planted a minimum of 1 in. deep.
Provides suppression of Texas panicum, seedling johnsongrass, and
shattercane. Do not harvest sweet corn ears for human consumption less
than 37 days after application of this herbicide. See label regarding tank
mixtures for broader spectrum control and/or control of emerged weeds.
Most annual broadleaf
and grass weeds
atrazine, MOA 5
(various brands) 4 F
(various brands) 90 WDG
1 to 2
1 to 2 qt
1.1 to 2.2 lb
Apply to soil surface immediately after planting. Shallow cultivations will
improve control. Check label for restrictions on rotational crops. See
label for reduced rate if soil coverage with plant residue is less than 30%
at planting. Does not control fall panicum or smooth crabgrass. May be
tank mixed with metolachlor, alachlor, glyphosate, paraquat, bentazon, or
simazine. Check label for directions.
dimethenamid-P, MOA 15
+ atrazine, MOA 5
(Guardsman Max) 5 F
0.5 to 1
+
2.4 to 4.6 pt
1 to 1.9
Apply to soil surface immediately after planting. Does not control Texas
panicum, seedling johnsongrass, or shattercane adequately. Adjust rate
for soil texture and organic matter according to label. See label for reduced
rate if soil coverage with plant residue is less than 30% at planting.
See labels for comments on rotational crops. See label for additional
instructions.
S-metolachlor, MOA 15
+ atrazine, MOA 5
(Bicep II Magnum) 5.5 F
0.78 to 1.56
+
1.3 to 2.6 qt
1 to 2
Apply to soil surface immediately after planting. Does not adequately control
Texas panicum, seedling johnsongrass, or shattercane. May not adequately
control cocklebur, morningglory, or sicklepod. Cultivation or other
herbicides may be needed. See label for rates based on soil texture and
organic matter and for information on setback requirements from streams
and lakes. See label for reduced rate if soil coverage with plant residue is
less than 30% at planting and for comments on rotational crops.
Small-seeded broadleaf
weeds and some
annual grass weeds
Broadleaf weeds,
including largeseeded
weeds such
as cocklebur and
annual grass and
partial control of yellow
nutsedge
saflufenacil, MOA 14
+ dimethenamid-P, MOA 15
(Verdict) 5.57 EC
bicyclopyrone, MOA 27
+ mesotrione, MOA 27
+S-metolachlor, MOA 15
(AcuronFlexi) 2.86 L
S-metolachlor, MOA 15
+ atrazine, MOA 5
+ mesotrione, MOA 27
+ bicyclopyrone, MOA 27
(Acuron) 3.44 L
10 to 18 oz
0.43 to 0.78 Registered for processing sweet corn only. Apply preplant surface,
preplant incorporated or preemergence after seeding. Do not apply to
emerged sweet corn.
1.6 to 1.8
2 to 2.25 qt
1.34 to 1.61
+ 0.625 to 0.75
+0.15 to 0.18
+0.038 to 0.045
2.5 to 3 qt
*Mode of action (MOA) code developed by the Weed Science Society of America.
Apply preplant or preemergence to sweet corn. Severe injury will occur if
applied to emerged sweet corn.
Apply preplant or preemergence to sweet corn. Severe injury will occur if
applied to emerged sweet corn.
2023 Vegetable Crop Handbook for Southeastern United States
339

Southeastern U.S. Vegetable Crop Handbook - 2023

Table of Contents for the Digital Edition of Southeastern U.S. Vegetable Crop Handbook - 2023