Southeastern U.S. Vegetable Crop Handbook - 2022 - 354

WEED CONTROL
TABLE 4-18. CHEMICAL WEED CONTROL IN PEAS (cont'd)
Weed
Herbicide,
Mode of Action Code*
and Formulation
PEAS, SOUTHERN, Postemergence (cont'd)
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)
Annual and perennial
grasses
quizalofop p-ethyl, MOA 1
(Assure II, Targa) 0.88 EC
sethoxydim, MOA 1
(Poast) 1.5 EC
clethodim, MOA 1
(Intensity One, Select Max)
1 EC
9 to 16 oz
*Mode of action (MOA) code developed by the Weed Science Society of America.
Up to 2 oz
See labels
See labels
Amount of
Formulation
Per Acre
Up to 0.031
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
Apply post-directed using hooded sprayers 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.
Row middles only. 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.
0.04 to 0.08
6 to 12 oz
0.2 to 0.3
1 to 1.5 pt
0.07 to 0.125
Apply to emerged grasses. Consult manufacturer's label for specific rates and
best times to treat. With sethoxydim, add 1 qt of crop oil concentrate per acre.
With quizalofop, add 1-gal oil concentrate or 1 qt nonionic surfactant per 100-gal
spray. Adding crop oil to Assure II or Poast may increase the likelihood of crop
injury at high air temperatures. Do not apply Assure II or Poast on days that are
unusually hot and humid. With sethoxydim, do not apply within 15 days and 60
days of harvest succulent and dry peas, respectively. With quizalofop, do not
apply within 60 days of harvest of dry Southern peas, or within 30 days of harvest
of succulent Southern peas
TABLE 4-19. CHEMICAL WEED CONTROL IN PEPPERS (cont'd)
Weed
Herbicide,
Mode of Action Code* and
Formulation
PEPPERS, Preplant
Suppression or control
of most annual grasses
and broadleaf weeds,
full rate required for
nutsedge control
metam sodium
(Vapam HL) 42%
15.7 to 31.5
37.5 to 75 gal
Rates are dependent on soil type and weeds present. For nutsedge control,
apply 75-gal per acre. Apply when soil moisture is at field capacity (100 to
125%). Apply through soil injection using a rotary tiller or inject with knives no
more than 4 in. apart; follow immediately with a roller to smooth and compact
the soil surface or with mulch. May apply through drip irrigation prior to planting
a second crop on mulch however adhere to label guidelines on crop plant-back
interval. Plant back interval is often 14 to 21 days and can be 30 days in some
environments. See label for all restrictions and additional information.
Contact kill of all green
foliage, stale bed
application
paraquat, MOA 22
(Parazone) 3 SL
(Gramoxone SL) 2 SL
0.5 to 1
1.3 to 2.7 pt
2 to 4 pt
Apply in a minimum of 10-gal of spray mix per acre to emerged weeds before
transplanting as a broadcast or band treatment over a preformed row. Row
should be formed several days ahead of planting and treating to allow maximum
weed emergence. 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 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
Annual and perennial
grass and broadleaf
weeds, stale bed
application
carfentrazone-ethyl, MOA 14
(Aim) 1.9 EW or 2 EC
Up to 0.031 Transplanted crop. Apply no later than 1 day before transplanting crop.
Up to 2 oz
Seeded crop. Apply no later than 7 days before planting seeded crop. Use a
nonionic surfactant or crop oil. See label for rate. Coverage of weed is essential
for good weed control. Can be tank mixed with other registered burndown
herbicides.
glyphosate, MOA 9
(numerous brands and
formulations)
See labels
See labels
Apply to emerged weeds at least 3 days before seeding or transplanting. When
applying Roundup before transplanting crops into plastic mulch, care must be
taken to remove residues of this product from the plastic prior to transplanting.
To prevent crop injury, residues can be removed by 0.5 in. rainfall or by applying
water via a sprinkler system. Perennial weeds may require higher rates of glyphosate.
Consult the manufacturer's label 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.
Emerged broadleaf
weeds and some annual
grasses
caprylic acid, MOA 25
(Homeplate)
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 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.
*Mode of action (MOA) code developed by the Weed Science Society of America.
354
2022 Vegetable Crop Handbook for Southeastern United States
Amount of
Formulation
Per Acre
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
Southeastern U.S. Vegetable Crop Handbook - 2022

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