Southeastern U.S. Vegetable Crop Handbook - 2021 - 348

WEED CONTROL
TABLE 4-19. CHEMICAL WEED CONTROL IN PEPPERS (cont'd)
Pounds
Weed
Herbicide,
Mode of Action Code*
and Formulation
PEPPERS, Row Middles
Most broadleaf weeds
less than 4 in. tall or
rosettes less than 3 in.
in diameter; does not
control grasses
carfentrazone-ethyl,
MOA 14
(Aim) 1.9 EW or 2 EC
Most emerged weeds glyphosate, MOA 9
(numerous brands and
formulations)
Yellow and purple nutsedge
and broadleaf
weeds
Contact kill of all green
foliage
halosulfuron-methyl,
MOA 2
(Profine 75, Sandea)
75 DG
paraquat, MOA 22
(Parazone) 3 SL
(Gramoxone SL) 2 SL
0.5 to 1 oz
1.3 pt
2 pt
Up to 2 oz
See labels
Amount of
Formulation
Per Acre
Active Ingredient
Per
Acre
Precautions and Remarks
Up to 0.031 Apply post-directed using hooded sprayer for control of emerged weeds. If crop is
contacted, burning of contacted area will occur. Use a nonionic surfactant or crop oil
with Aim. See label for rate. Coverage is essential for good weed control. Can be tank
mixed with other registered herbicides. PHI = 0 days.
See labels
Apply as a hooded spray in row middles, as shielded spray in row middles, as wiper
applications in row middles, or postharvest. To avoid severe injury to crop, do not
allow herbicide to contact foliage, green shoots, stems, exposed, roots, or fruit of
crop. PHI = 14 days.
0.024 to 0.048 Apply to row middles as a postemergence spray. In plasticulture, do not allow spray to
contact plastic. Early season application will give postemergence and preemergence
control. Do not apply within 30 days of harvest. For postemergence applications, use
nonionic surfactant at 1 qt per 100 gal of spray solution.
0.5
Apply in a minimum of 20 gal spray mix per acre as a shielded spray to emerged
weeds between rows of peppers. Use a nonionic surfactant at a rate of 16 oz per 100
gal spray mix. Do not apply more than 3 applications per season. Paraquat product
labels require applicators to take an EPA-approved training every 3 years in order to
mix, load, and apply paraquat.
*Mode of action (MOA) code developed by the Weed Science Society of America.
TABLE 4-20. CHEMICAL WEED CONTROL IN POTATOES, IRISH (cont'd)
Weed
Herbicide,
Mode of Action Code*
and Formulation
Contact kill of all green
foliage, stale bed
application
paraquat, MOA 22
(Parazone) 3 SL
(Gramoxone SL) 2 SL
Amount of
Formulation
Per Acre
POTATOES, IRISH, Preplant and Preemergence
0.25 to 0.5
0.7 to 1.3 pt
1 to 2 pt
Apply in a minimum of 20 gal spray mix per acre to emerged weeds up to ground
cracking before crop emergence. May be used instead of the drag-off operation
to kill emerged weeds before the application of preemergence herbicides. Use a
nonionic surfactant at a rate of 16 to 32 oz per 100 gal spray mix or 1 gal approved
crop oil concentrate per 100 gal spray mix. Paraquat product labels require applicators
to take an EPA-approved training every 3 years in order to mix, load, and apply
paraquat.
Most broadleaf weeds
less than 4 in. tall or
rosettes less than 3 in.
in diameter; does not
control grasses
Emerged broadleaf
weeds and some
annual grasses
carfentrazone-ethyl,
MOA 14
(Aim) 1.9 EW or 2 EC
caprylic acid, MOA 26
(Homeplate)
Up to 2 oz
Up to 0.031 Apply prior to planting, or within 1 day after planting crop. Use a nonionic surfactant
or crop oil with Aim. See label for rate. Coverage of weed is essential for good weed
control. Can be tank mixed with other registered burndown herbicides.
See label
See label
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, as a harvest aid and desiccant, 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.
Annual and perennial
grass and broadleaf
weeds, stale bed
application
Annual grasses and
small-seeded broadleaf
weeds
Annual grasses and
small-seeded broadleaf
weeds, plus yellow
nutsedge suppression
glyphosate, MOA 9
(numerous brands and
formulations)
See labels
See labels
Apply to emerged weeds before crop emergence. Do not feed crop residue to
livestock for 8 weeks following treatment. Perennial weeds may require higher rates
of glyphosate. Consult the manufacturer's label for rates for specific weeds. Certain
glyphosate formulations require the addition of a surfactant. Adding nonionic
surfactant to glyphosate formulated with nonionic surfactant may result in reduced
weed control.
pendimethalin, MOA 3
(Prowl) 3.3 EC
S-metolachlor, MOA 15
(Brawl, Dual Magnum,
Medal) 7.62 EC (Brawl II,
Dual II Magnum, Medal II)
7.64 EC
dimethenamid-P, MOA 15
(Outlook) 6 EC
0.75 to 1.5
1.8 to 3.6 pt
Apply just after planting or drag-off to weed-free soil before crop emerges or from
emergence until crop reaches 6 in. tall.
0.95 to 1.91 Apply just after planting or drag-off to weed-free soil before crop emerges. Dual
Magnum can also be applied at lay-by for control of late season weeds. Do not
apply within 60 days after the at-planting to drag-off application, or within 40 days
after a lay-by application. See label for further instruction.
1 to 2 pt
0.6 to 1
12 to 21 oz
Apply just after planting or drag-off to weed-free soil before crop emerges. See label
for further instructions. PHI = 40 days.
Pounds Active
Ingredient Per
Acre
Precautions and Remarks
348
2021 Vegetable Crop Handbook for Southeastern United States

Southeastern U.S. Vegetable Crop Handbook - 2021

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