Southeastern U.S. Vegetable Crop Handbook - 2021 - 346

WEED CONTROL
TABLE 4-19. CHEMICAL WEED CONTROL IN PEPPERS (cont'd)
Pounds
Weed
PEPPERS, Preplant
Suppression or
control of most annual
grasses and broadleaf
weeds, full rate
required for nutsedge
control
Contact kill of all green
foliage, stale bed
application
Herbicide,
Mode of Action Code*
and Formulation
metam sodium
(Vapam HL) 42%
Amount of
Formulation
Per Acre
Active Ingredient
Per
Acre
Precautions and Remarks
37.5 to 75 gal
15.7 to 31.5 Rates are dependent on soil type and weeds present. For nutsedge control, apply
75 gal per acre. Apply when soil moisture is at field capacity (100 to 125%).Apply
through soil injection using a rotary tiller or inject with knives no more than 4 in. apart;
follow immediately with a roller to smooth and compact the soil surface or with mulch.
May apply through drip irrigation prior to planting a second crop on mulch however
adhere to label guidelines on crop plant-back interval. Plant back interval is often 14
to 21 days and can be 30 days in some environments. See label for all restrictions
and additional information.
paraquat, MOA 22
(Parazone) 3 SL
(Gramoxone SL) 2 SL
0.5 to 1
1.3 to 2.7 pt
2 to 4 pt
Apply in a minimum of 10 gal of spray mix per acre to emerged weeds before
transplanting as a broadcast or band treatment over a preformed row. 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 in order 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
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 Transplanted crop. Apply no later than 1 day before transplanting crop.
Seeded crop. Apply no later than 7 days before planting seeded crop. Use a nonionic
surfactant or crop oil. See label for rate. Coverage of weed is essential for good weed
control. Can be tank mixed with other registered burndown herbicides.
Apply to emerged weeds at least 3 days before seeding or transplanting. 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. Perennial weeds may require higher rates of glyphosate. Consult
the manufacturer's label 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.
Emerged broadleaf
weeds and some
annual grasses
caprylic acid, MOA 25
(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.
Broadleaf weeds
including Carolina
geranium and cutleaf
evening primrose and
a few annual grasses
Palmer amaranth,
redroot pigweed,
smooth pigweed,
Galinsoga spp., black
nightshade, Eastern
black nightshade,
common purslane,
partial control of yellow
nutsedge
oxyfluorfen, MOA 14
(Goal) 2XL
(GoalTender) 4 F
fomesafen, MOA 14
(Reflex) 2 EC
0.5
Up to 2 pt
Up to 1 pt
Plasticulture 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.
1 to 1.5 pt
0.25 to 0.375 This is a Section 24(c) Special Local Need Label for transplanted pepper. Growers
must obtain the label at
https://www.syngenta-us.com/labels/indemnified-label-search prior to making an
application of Reflex. See label for further instructions.
Plasticulture In-row Application for Transplanted Pepper. 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, pepper may
be transplanted immediately following the application of Reflex and the application of
the mulch.
Bareground for Transplanted Pepper. Apply pretransplant up to 7 days prior to
transplanting pepper. 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.
346
2021 Vegetable Crop Handbook for Southeastern United States

https://www.syngenta-us.com/labels/indemnified-label-search

Southeastern U.S. Vegetable Crop Handbook - 2021

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