Southeastern U.S. Vegetable Crop Handbook - 2021 - 359

WEED CONTROL
TABLE 4-26. CHEMICAL WEED CONTROL IN TOMATOES (cont'd)
Weed
Herbicide,
Mode of Action Code*
and Formulation
TOMATO, Postemergence (cont'd)
Annual grasses and
broadleaf weeds,
including cocklebur,
common ragweed,
smartweed, velvetleaf,
jimsonweed, yellow
nutsedge, and morningglory
Most
broadleaf weeds
including wild radish,
common purslane,
redroot and smooth
pigweed
Yellow nutsedge,
morningglory, common
cocklebur, common
lambsquarters, and
other broadleaf weeds
Annual and perennial
grasses only
metribuzin, MOA 5
(TriCor DF, Metribuzin)
75 WDG
0.25 to 1
0.33 to 1.33 lb
Use either as a broadcast or directed spray but do not exceed 0.5 lb a.i. with a
broadcast spray. Do not apply within 7 days of harvest. Do not exceed 1 lb a.i. per
year. Do not apply as a broadcast spray unless 3 sunny days precede application.
Amount of
Formulation
Per Acre
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
rimsulfuron, MOA 2
(Matrix) 25 WDG
(Pruvin) 25 WDG
0.25 to 0.5
1 to 2 oz
Apply in tomatoes after the crop has at least two true leaves and weeds are small
(1 in. or less) and actively growing. Add nonionic surfactant at 1 qt per 100 gal of
spray solution. Do not apply within 45 days of tomato harvest. See label for further
instruction.
trifloxysulfuron-sodium,
MOA 2
(Envoke) 75 DG
clethodim, MOA 1
(Arrow, Clethodim,
Intensity, Select) 2 EC
(Select Max, Intensity
One) 1 EC
sethoxydim, MOA 1
(Poast) 1.5 EC
TOMATO, Row Middles
Yellow nutsedge,
morningglory, common
cocklebur, common
lambsquarters, and
other broadleaf weeds
Yellow and purple nutsedge
and broadleaf
weeds
Most broadleaf weeds
less than 4 in. tall or
rosettes less than 3 in.
in diameter; does not
control grasses
Annual grasses and
small-seeded broadleaf
weeds
trifloxysulfuron-sodium,
MOA 2
(Envoke) 75 DG
halosulfuron-methyl,
MOA 2
(Profine 75, Sandea)
75 DG
carfentrazone-ethyl, MOA
14
(Aim) 1.9 EW or 2 EC
napropamide, MOA 15
(Devrinol, Devrinol DF-XT)
50 DF
(Devrinol, Devrinol 2-XT)
2 EC
pendimethalin, MOA 3
(Prowl H2
O) 3.8 AS
2 to 4 lb
2 to 4 qt
0.5 to 1.5
1 to 3 pt
Post-directed spray on the soil at the base of the plant, beneath plants and between
rows. Avoid direct contact with tomato foliage or stems. Do not apply more than 3
pt per acre per season. See label for specific use rate for your soil type. Emerged
weeds will not be controlled. Avoid direct contact with tomato foliage or stems. Do
not apply within 21 days of harvest. See label for further instructions and precautions.
Contact
kill of all green
foliage
paraquat, MOA 22
(Parazone) 3 SL
(Gramoxone SL) 2 SL
0.5 to 1
1.3 pt
Apply for control of emerged weeds between rows of tomatoes. Do not allow spray
to contract crop or injury will occur. Do not make more than 3 applications per
season. Do not apply within 30 days of harvest. 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.
Up to 2 oz
0.5 to 1 oz
0.1 to 0.2 oz
0.1 to 0.2 oz
0.0047 to
0.0094
Apply post-directed to tomato grown on plastic for control of nutsedge and certain
broadleaf weeds. Crop should be transplanted at least 14 days prior to application
The application should be made prior to fruit set and at least 45 days prior to harvest.
Use nonionic surfactant at 1 qt per 100 gal spray solution with all applications.
6 to 16 oz
9 to 32 oz
1 to 1.5 pt
0.0047 to
0.0094
0.094 to 0.25
0.07 to 0.25
0.2 to 0.3
Apply to actively growing grasses not suffering from drought stress. Adding crop oil
may increase the likelihood of crop injury at high air temperatures and high humidity.
Very effective in controlling annual bluegrass. PHI = 20 days.
Apply to actively growing grasses not under drought stress. 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 = 20 days.
Crop should be transplanted at least 14 days prior to application. Use nonionic
surfactant at 1 qt per 100 gal spray solution with all applications. Apply prior to fruit
set and at least 45 days prior to harvest. See label for information on registered tank
mixes. Tank mixtures with Select or Poast may reduce grass control. See label for
more information.
0.024 to 0.048 For postemergence applications, use nonionic surfactant at 1 qt per 100 gal of spray
solution. Some weeds, such as nutsedge, may require two applications of Sandea.
If a second application is needed, spot-treat only weed-infested areas. Do not apply
within 30 days of harvest. See label for further instructions.
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 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.
1 to 2
Plasticulture. Apply to a weed-free soil surface. Apply within 24 hours of rainfall, or
mechanically incorporate or irrigate into the soil to a depth of 1 to 2 in.
2021 Vegetable Crop Handbook for Southeastern United States
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Southeastern U.S. Vegetable Crop Handbook - 2021

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