Southeastern U.S. Vegetable Crop Handbook - 2023 - 328

WEED CONTROL
TABLE 4-1. CHEMICAL WEED CONTROL ASPARAGUS (CONT'D)
Weed
Herbicide,
Mode of Action Code*
and Formulation
glyphosate, MOA 9
(numerous brands and
formulations)
Amount of
Formulation
Per Acre
See labels
Pounds Active
Ingredient
Per Acre
ASPARAGUS (established at least 2 yr. old), Postemergence (cont'd)
Annual and perennial
grass and broadleaf
weeds; established
volunteer ferns
See labels
Precautions and Remarks
Apply to emerged weeds up to 1 week before spear emergence or immediately
after last cutting has removed all aboveground parts or as a directed
spray under mature fern. Avoid contact with the stem to reduce risk of injury.
Perennial weeds may require higher rates of glyphosate. For spot treatment,
apply immediately after cutting but prior to emergence of new spears. Certain
glyphosate formulations may require the addition of a surfactant. Adding nonionic
surfactant to glyphosate formulated with nonionic surfactant may result
in reduced weed control.
Yellow and purple
nutsedge, wild
radish, non-ALS
resistant pigweed,
cocklebur, ragweed,
and other broadleaf
weeds
halosulfuron-methyl, MOA 2
(Profine 75, Sandea) 75 DF 0.5 to 1.5 oz
0.024 to 0.072 Postemergence and post-transplant. Apply before or during harvesting
season. Do not use nonionic surfactant or crop oil because unacceptable crop
injury may occur. Without the addition of a nonionic surfactant, post emergence
weed control maybe reduced. PHI = 1 day.
Post-harvest. Apply after final harvest with drop nozzles to limit contact with
crop. Contact with the fern may result in temporary yellowing. Add a nonionic
surfactant at 1 qt per 100-gal of spray mixture. Under heavy nutsedge pressure,
split applications will be more effective; see label for details.
clethodim, MOA 1
(Intensity One, Select Max)
1 EC
(Arrow) 2EC
fluazifop, MOA 1
(Fusilade DX) 2 EC
sethoxydim, MOA 1
(Poast) 1.5 EC
9 to 16 oz
6 to 8 oz
0.1 to 0.25
6 to 16 oz
0.3 to 0.5
1.5 to 2.5 pt
* Mode of action (MOA) code developed by the Weed Science Society of America.
Apply to actively growing grasses not under drought stress. See label for rates
for specific weeds. See label for adjuvant and rate. PHI = 1 day.
Apply to emerged grasses. Consult manufacturer's label for specific rates and
best times to treat. See label for adjuvant and rate. Adding crop oil to Poast
may increase the likelihood of crop injury at high air temperatures and high
humidity. PHI = 1 day.
0.07 to 0.125 For Select Max, add 2 pt nonionic surfactant per 100-gal spray mixture. PHI
= 1 day.
TABLE 4-2. CHEMICAL WEED CONTROL BEANS (CONT'D)
Weed
Herbicide,
Mode of Action Code*
and Formulation
BEANS, Preplant and Preemergence
Contact kill of all
green foliage, stale
bed application
paraquat, MOA 22
(Parazone) 3 SL
(Gramoxone SL) 2 SL
Amount of
Formulation
Per Acre
0.5 to 1
1.3 to 2.7 pt
2 to 4 pt
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
Lima or snap beans only. 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, stale bed
application
Broadleaf weeds and
some annual grasses
carfentrazone-ethyl,
MOA 14
(Aim) 1.9 EW or 2 EC
glyphosate, MOA 9
(numerous brands and
formulations)
caprylic acid, MOA 26
(Homeplate)
Up to 2 oz
See labels
Up to 0.031 Legume vegetable group (Group 6) such as but not limited to edamame,
kidney bean, lima bean, pinto bean, snap bean, soybean, and
wax bean only. Apply prior to or no later than one day after planting. 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.
See labels Various beans are covered. Apply to emerged weeds before crop emergence.
Perennial weeds may require higher rates of glyphosate. Consult the
manufacturer's label for rates for specific weeds. Certain glyphosate formulations
may require the addition of a surfactant. Adding nonionic surfactant
to glyphosate formulated with nonionic surfactant may result in reduced
weed control. See label for details.
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.
* Mode of action (MOA) code developed by the Weed Science Society of America.
328
2023 Vegetable Crop Handbook for Southeastern United States
Southeastern U.S. Vegetable Crop Handbook - 2023

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