Southeastern U.S. Vegetable Crop Handbook - 2023 - 369

WEED CONTROL
TABLE 4-26. CHEMICAL WEED CONTROL IN TOMATOES (CONT'D)
Weed
Herbicide,
Mode of Action Code*
and Formulation
TOMATO, Preplant (cont'd)
Annual grasses and
small-seeded broadleaf
weeds including
common lambsquarters,
pigweed, carpetweed,
and common
purslane
(cont'd)
Yellow and purple
nutsedge and broadleaf
weeds including
pigweed, wild radish,
common ragweed,
suppression of
purslane
Yellow nutsedge,
annual grasses, and
broadleaf weeds
including pigweed,
Palmer amaranth,
Florida pusley, Hairy
galinsoga, Eastern
black nightshade, and
carpetweed
Palmer amaranth,
redroot pigweed,
smooth pigweed,
Galinsoga spp., black
nightshade, Eastern
black nightshade,
common purslane,
partial control of yellow
nutsedge
trifluralin, MOA 3
(Treflan HFP, Trifluralin,
Trifluralin HF, various other
trade names) 4 EC
1 pt
0.5
Transplant tomato. Apply pretransplant and incorporate into the soil 2
to 3 in. within 8 hours using a rototiller or tandem disk. Can be applied
postplanting as a directed spray to soil between the rows and beneath
plants and then incorporated. Cold soil temperatures may exacerbate
injury from trifluralin.
Amount of
Formulation
Per Acre
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
halosulfuron-methyl,
MOA 2
(Profine 75, Sandea) 75 DG
0.5 to 1 oz
0.024 to 0.048 For pretransplant application under plastic mulch, apply to pre-formed
bed just prior to plastic mulch application and delay transplanting at least
7 days. Can be applied for pretransplant application in bareground tomato.
Early season application will give postemergence and preemergence
control. The 1 oz rate is for preemergence and postemergence control in
row middles only. For postemergence applications, use nonionic surfactant
at 1 qt per 100-gal of spray solution. PHI = 30 days.
S-metolachlor, MOA 15
(Brawl, Dual Magnum)
7.62 EC
1 to 2 pt
0.95 to 1.50 lb Apply preplant or postdirected to transplants after the first settling rain or
irrigation. In plasticulture, apply to preformed beds just prior to applying
plastic mulch. Lower rates of rate range for S-metolachlor are safest
to tomato. May also be used to treat row middles in bedded tomato.
Minimize contact with crop. Also registered for use in row middles, and
in seeded crop. See label for further instructions. PHI = 90 days.
fomesafen, MOA 14
(Reflex) 2 EC
1 to 1.5 pt
0.25 to 0.375 This is a Section 24(c) Special Local Need Label for transplanted
tomato. Growers must obtain the label prior to making an application of
Reflex. See label for further instructions. Carryover is a large concern.
Plasticulture In-row Application for Transplanted Tomato. Apply
after final bed formation and the drip tape is laid but prior to laying plastic
mulch. Avoid soil disturbance after application. Unless restricted by other
products such as fumigants, tomato may be transplanted immediately
following the application of Reflex and the application of the mulch.
Bareground for Transplanted Tomato. Apply pretransplant up to 7
days prior to transplanting tomato. Weed control will be reduced if soil
is disturbed after application. During the transplanting operation, make
sure the soil in the transplant hole settles flush or above the surrounding
soil surface. Avoid cultural practices that may concentrate Reflex-treated
soil around the transplant root ball. An overhead irrigation or rainfall
event between Reflex herbicide application and transplanting will ensure
herbicide activation and will likely reduce the potential for crop injury due
to splashing.
Plasticulture Row Middle Application. Apply to row middles with a
hooded or shielded sprayer. Avoid drift of herbicide on mulch. If drift
occurs, 0.5 in. of rain or irrigation must occur prior to transplanting.
Carryover is a large concern; see label for more information.
Annual grasses and
broadleaf weeds
including jimsonweed,
common ragweed,
smartweed, and
velvetleaf
Broadleaf weeds
including Carolina
geranium and cutleaf
eveningprimrose and a
few annual grasses
Broadleaf, grass
(suppression), yellow
nutsedge (PRE or
POST), purple nutsedge
(POST only)
metribuzin, MOA 5
(TriCor DF, Metribuzin,
Dimetric) 75 WDG
(Dimetric) 3 F
oxyfluorfen, MOA 14
(Goal) 2XL
(GoalTender) 4 F
imazosulfuron, MOA 2
(League) 0.5 DF
0.25 to 0.5
0.33 to 0.67 lb
0.67 to 1 pt
0.5 lb
up to 2 pt
up to 1 pt
0.19 to 0.3
4 to 6.4 oz
Plasticulture (fallow beds) only. Apply to soil surface of pre-formed
beds at least 30 days prior to transplanting crop. While incorporation
is not necessary, it may result in less crop injury. Plastic mulch can be
applied any time after application, but best results are likely if applied
soon after application.
Apply to planting beds before plastic is laid. Tomato may be transplanted
1 day after application. Refer to label for further application instructions.
Consult label for approved surfactants and crop rotation restrictions. PHI
= 21 days.
*Mode of action (MOA) code developed by the Weed Science Society of America.
Apply to soil surface and incorporate 2 to 4 in. deep before transplanting.
See label for instructions.
2023 Vegetable Crop Handbook for Southeastern United States
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Southeastern U.S. Vegetable Crop Handbook - 2023

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