Southeastern U.S. Vegetable Crop Handbook - 2023 - 362

WEED CONTROL
TABLE 4-21. CHEMICAL WEED CONTROL IN PUMPKINS (CONT'D)
Weed
Herbicide,
Mode of Action Code*
and Formulation
PUMPKINS, Preplant and Preemergence (cont'd)
Annual grasses and
some small-seeded
broadleaf weeds
bensulide, MOA 8
(Prefar) 4 EC
5 to 6
5 to 6 qt
Registered for cucurbit vegetable group (Crop grouping 9). Apply preplant
and incorporate into the soil 1 to 2 in. (1 in. incorporation is optimum) with
a rototiller or tandem disk or apply to the soil surface after seeding and
follow with irrigation. Check re-plant restrictions for small grains on label.
See label for use rate if Prefar 4 EC is used.
ethalfluralin, MOA 3
(Curbit) 3 EC
1.1 to 1.7
3 to 4.5 pt
Apply postplanting to seeded crop prior to crop emergence, or as a banded
spray between rows after crop emergence or transplanting. See label
for timing. Shallow cultivation, irrigation, or rainfall within 5 days is needed
for good weed control. Do not use under mulches, row covers, or hot caps.
Under conditions of unusually cold or wet soil and air temperatures, crop
stunting or injury may occur. Crop injury can occur if seeding depth is too
shallow.
ethalfluralin, MOA 3 +
clomazone, MOA 13
(Strategy) 2.1 L
Yellow and purple
nutsedge suppression,
non-ALS resistant
pigweed, wild radish,
and ragweed
halosulfuron-methyl,
MOA 2
(Profine 75, Sandea) 75 DG 0.5 to 0.75 oz
0.4 to 1.2 +
0.125 to 0.375
2 to 6 pt
0.024 to 0.036
lb
Apply to the soil surface immediately after crop seeding for preemergence
control of weeds. DO NOT APPLY PRIOR TO PLANTING THE CROP.
DO NOT SOIL INCORPORATE. May also be used as a banded treatment
between rows after crop emergence or transplanting.
Direct-seeded pumpkin or winter squash. Apply after seeding but prior
to soil cracking.
Transplanted pumpkin and winter squash. Apply 7 days prior to
transplanting. See label for specific rate. See label for crop rotational
restrictions and other information.
Post-transplant in pumpkin and winter squash. Can be applied as
an over-the-top application, a directed spray application, or with crop
shields. Apply to transplants that are established, actively growing and
in the 3- to 5- true leaf stage or no sooner than 14 days after transplanting
unless local conditions demonstrate safety at an earlier interval, but
before first female flowers appear. Row middle/furrow applications in
direct-seeded and transplant pumpkin and winter squash. Apply between
rows of direct-seeded or transplanted crop while avoiding contact of the
herbicide with the planted crop. If plastic is used on the planted row, adjust
equipment's to keep the application off the plastic. Reduce rate and spray
volume in proportion to area sprayed. Rate can be increased to 1 oz per
acre if needed for row middle/furrow applications.
Annual broadleaf,
grass and yellow
nutsedge
S-metolachlor, MOA 15
(Brawl, Dual Magnum)
1 to 1.33 pt
0.95 to 1.26 Apply as interrow or interhill application. Leave a 1-foot untreated area
over the seeded row (6 in. on either side of the row). Application made as
a broadcast spray over the planted row or hill or directly to crop foliage will
increase the risk of injury to the crop. Apply before weeds emerge. See
label for further instructions.
PUMPKINS, Postemergence
Yellow and purple
nutsedge suppression,
non-ALS resistant
pigweed, wild radish,
and ragweed
halosulfuron-methyl,
MOA 2
(Profine 75, Sandea) 75 DG 0.5 to 0.75 oz
0.024 to 0.036 Direct-seeded pumpkin and winter squash. Apply after crop has
reached the 2 to 5 true leaf stage, preferably 4 to 5 true leaves, but before
first female flowers appear. PHI = 30 days.
Post-transplant in pumpkin and winter squash. Can be applied as an
over- the-top application, a directed spray application, or with crop shields.
Apply to transplants that are established, actively growing and in the 3 to 5
true leaf stages or no sooner than 14 days after transplanting unless local
conditions demonstrate safety at an earlier interval, but before first female
flowers appear. PHI = 30 days.
Row middle/furrow applications in direct-seeded and transplant
pumpkin or winter squash. Apply between rows of direct-seeded or
transplanted crop while avoiding contact of the herbicide with the planted
crop. If plastic is used on the planted row, adjust equipment's to keep the
application off the plastic. Reduce rate and spray volume in proportion to
area sprayed. Rate can be increased to 1 oz per acre if needed for row
middle/furrow applications. PHI =30 days.
PUMPKINS, Row Middles
Annual and perennial
grasses only
clethodim, MOA 1
(Arrow, Clethodim Intensity,
Select) 2 EC
(Intensity One, Select Max)
1 EC
sethoxydim, MOA 1
(Poast) 1.5 EC
6 to 8 oz
9 to 16 oz
1 to 1.5 pt
*Mode of action (MOA) code developed by the Weed Science Society of America.
362
2023 Vegetable Crop Handbook for Southeastern United States
0.094 to 0.125
0.07 to 0.125
0.2 to 0.3
Apply postemergence for control of grasses. See label for adjuvant and
rate. Adding crop oil concentrate may increase the likelihood of crop injury
at high air temperatures and high humidity. Very effective in controlling
annual bluegrass. Apply to actively growing grasses not under drought
stress. PHI = 14 days.
Apply to emerged grasses. Consult manufacturer's label for specific rates
and best times to treat and adjuvant and rate. Crop oil may increase the
likelihood of crop injury at high temperatures and high humidity. PHI = 14
days.
Amount of
Formulation
Per Acre
Pounds Active
Ingredient
Per Acre
Precautions and Remarks
Southeastern U.S. Vegetable Crop Handbook - 2023

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