Southeastern U.S. Vegetable Crop Handbook - 2021 - 336

WEED CONTROL
TABLE 4-11. CHEMICAL WEED CONTROL IN EGGPLANT (cont'd)
Weed
Herbicide,
Mode of Action Code* and
Formulation
EGGPLANT, Preplant (cont'd)
Annual and perennial
grass and broadleaf
weeds, stale bed
application
glyphosate, MOA 9
(numerous brands and
formulations)
See labels
See labels
Apply to emerged weeds at least 3 days before seeding or transplanting. Perennial
weeds may require higher rates of glyphosate. Consult the manufacturer's label for
rates for specific weeds. 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. Certain glyphosate formulations
require the addition of 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 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.
EGGPLANT, Preemergence
Annual grasses and
small-seeded broadleaf
weeds
Annual grasses and
some broadleaf weeds
bensulide, MOA 8
(Prefar) 4 EC
napropamide, MOA 15
(Devrinol, Devrinol DF-XT)
50 DF
(Devrinol 2-XT) 2 EC
EGGPLANT, Postemergence
Annual grasses and
small-seeded broadleaf
weeds
Annual and perennial
grasses only
DCPA, MOA 3
(Dacthal) W-75
(Dacthal) 6 F
sethoxydim, MOA 1
(Poast) 1.5 EC
clethodim, MOA 1
(Arrow, Clethodim,
Intensity, Select) 2 EC
(Select Max, Intensity One)
1 EC
EGGPLANT, 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
Up to 2 oz
See labels
4.5 to 7.5
6 to 10 lb
6 to 10 pt
0.2 to 0.3
1 to 1.5 pt
Application confined to a period of 4 to 6 weeks after transplanting. To improve
preemergence control of late emerging weeds. Apply to weed-free soil over the top
of transplants.
Apply to emerged grasses. Consult manufacturer's label for specific rates and best
times to treat and adjuvant and rate. Adding crop oil to Poast may increase the
likelihood of crop injury at high air temperatures and high humidity. PHI = 20 days.
6 to 8 oz
9 to 16 oz
0.094 to 0.125
0.07 to 0.125
Apply postemergence for control of grasses. See label for adjuvant and rate.
Adding crop oil may increase the likelihood of crop injury at high air temperature
and high humidity. Very effective in controlling annual bluegrass. Apply to actively
growing grasses not under drought stress. PHI = 20 days.
2 to 4 lb
2 to 4 qt
5 to 6
5 to 6 qt
1 to 2
Apply preplant incorporated (1 in. incorporation is optimum) or preemergence after
planting. With preemergence application, irrigate immediately after application. See
label for more directions.
Transplanted eggplant only. Apply preplant and incorporate into soil 1 to 2 in. using
a rototiller or tandem disk. Shallow cultivations or irrigation will improve control. See
label for small grains replanting restrictions. May also be applied in the row middles
between plastic covered beds. See label for more information. See XT labels for
information regarding delay in irrigation event.
Amount of
Formulation
Per Acre
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
Up to 0.031 Apply post-directed using hooded sprayers for control of emerged weeds. If crop
is contacted, burning of contacted area will occur. Use crop oil concentrate at up
to 1 gal per 100 gal solution or a nonionic surfactant at 2 pt per 100 gal of spray
solution. Coverage is essential for good weed control. Can be tank mixed with
other registered herbicides.
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 or stems, exposed roots, or fruit
of crop. PHI= 14 days.
halosulfuron-methyl, MOA 2
(Profine 75, Sandea) 75 DG 0.5 to 1 oz
paraquat, MOA 22
(Parazone) 3 SL
(Gramoxone SL) 2 SL
0.024 to 0.048 Apply between rows as a postemergence spray. Do not allow spray to contact crop
or plastic mulch. Early season application will give postemergence and preemergence
control. For postemergence applications, use nonionic surfactant at 1 qt per
100 gal of spray solution. PHI = 30 days.
0.5
1.3 pt
2 pt
*Mode of action (MOA) code developed by the Weed Science Society of America.
Apply in 10 gal spray mix as a shielded spray to emerged weeds between rows of
eggplant. 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. Do not allow spray to
contact crop or injury will result. Paraquat product labels require applicators to take
an EPA-approved training every 3 years in order to mix, load, and apply paraquat.
336
2021 Vegetable Crop Handbook for Southeastern United States

Southeastern U.S. Vegetable Crop Handbook - 2021

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