Southeastern U.S. Vegetable Crop Handbook - 2022 - 352

WEED CONTROL
TABLE 4-18. CHEMICAL WEED CONTROL IN PEAS (cont'd)
Weed
Herbicide,
Mode of Action Code*
and Formulation
Contact kill of all green
foliage, stale bed application
paraquat,
MOA 22
(Parazone) 3SL
(Gramoxone SL) 2 SL
Amount of
Formulation
Per Acre
PEAS, GREEN/ENGLISH, Preplant and Preemergence
0.5 to 1
1.3 to 2.7 pt
2 to 4 pt
Apply in a minimum of 10-gal spray mix per acre to emerged weeds before crop
emergence as a broadcast or band treatment over a preformed row. Use sufficient
water to give thorough coverage. 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
carfentrazone-ethyl,
MOA 14
(Aim) 1.9 EW or 2 EC
glyphosate, MOA 9
(numerous brands and
formulations)
Up to 2 oz
See labels
See labels
Up to 0.031
Apply prior to planting or emergence of crop. 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 burndown herbicides.
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.
Broadleaf weeds and
some annual grasses
caprylic acid, MOA 26
(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. 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
saflufenacil, MOA 14
(Sharpen) 3.42 SL
0.027
1 oz
Dry field pea edible pea (sugar snap, English pea, garden pea, green
pea, marrow fat pea) and chickpea only. Apply as a preplant/preemergence
burndown of small actively growing broadleaf weeds. Can also be used preplant
incorporated or preemergence in edible pea. See label for directions. Do not apply
more than 2 ounces per acre per season. Apply as a preplant/preemergence
burndown. Do not apply more than 2 oz per acre per season.
Annual grasses and
small-seeded broadleaf
weeds
pendimethalin, MOA 3
(Prowl H2
O) 3.8 AS
trifluralin, MOA 3
(Treflan, Trifluralin,
Trifluralin HF, other
brands) 4 EC
Annual grasses and
broadleaf weeds; weak
on pigweed
Annual grasses,
small-seeded broadleaf
weeds, and suppression
of yellow nutsedge
Annual broadleaf weeds
including morningglory,
pigweed, smartweed, and
purslane
clomazone, MOA 13
(Command) 3ME
S-metolachlor, MOA 15
(Brawl, Dual Magnum,
Medal) 7.62 EC
(Brawl II, Dual II Magnum,
Medal II) 7.64 EC
imazethapyr, MOA 2
(Pursuit) 2 EC
PEAS, GREEN, Postemergence
Annual broadleaf weeds
and yellow nutsedge
Most broadleaf weeds
less than 4 in. tall or
rosettes less than 3 in.
in diameter; does not
control grasses
Most emerged weeds
1 to 2 pt
Up to 0.047
Up to 3 oz
English peas only. Apply preplant incorporated or to soil surface immediately
after planting. See label for more details.
0.75 to 1.5
1.5 to 3 pt
0.5 to 0.75
1 to 1.5 pt
0.5
1.3 pt
0.95 to 1.91
Apply to the soil surface immediately after seeding. See label for further instruction.
Apply
to soil surface immediately after seeding. Shallow cultivations will improve
control. See label for specific rate.
Southernpeas (cowpeas) and snap beans only. Apply preplant and incorporate
into the soil 2 to 3 in. using a power-driven rototiller or by cross disking. DO NOT
APPLY AFTER SEEDING. Do not apply when air temperature is below 45°F.
English peas only. Apply preplant and incorporate to a depth of 2 to 3 in. within
8 hr with a rototiller or tandem disk.
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
bentazon, MOA 6
(Basagran) 4 SL
0.5 to 1
1 to 2 pt
carfentrazone-ethyl,
MOA 14
(Aim) 1.9 EW or 2 EC
glyphosate, MOA 9
(numerous brands and
formulations)
Up to 2 oz
See labels
See labels
Up to 0.031
Apply overtop of peas when weeds are small, and peas have at least three pairs
of leaves (four nodes). DO NOT ADD CROP OIL CONCENTRATE TO SPRAY
MIX. Do not apply when peas are in bloom. PHI = 10 days.
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 or
stems, exposed roots, or fruit of crop. PHI = 14 days.
*Mode of action (MOA) code developed by the Weed Science Society of America.
352
2022 Vegetable Crop Handbook for Southeastern United States
Southeastern U.S. Vegetable Crop Handbook - 2022

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