Table 15.5. Herbicides approved for managing weeds in carrot. (continued)
Labels change frequently. Be sure to read a current product label before applying any chemical.
Active ingredient Trade name MOA
lb. a.i./A product/A code Weeds controlled / remarks
Pelargonic acid (Scythe) 4.2 EC 27 Emerged broadleaf and grass weeds. Apply as a preplant burn down treatment. Scythe is a contact and
nonresidual herbicide and can be tank mixed with a residual preemergence herbicide to lengthen time of
control
3 - 10% v/v
Pendimethalin (Prowl H20) 3.8 3 Broadleaf and grass control. Apply within 2 days of planting before the emergence of the crop. PHI 60
0.95 2.0 pt. days.
Prometryn (Caparol) 4 L 5 Most annual broadleaf and grass weeds. Do not exceed one application. Consult label for rotiational
1.0 - 2.0 2 - 4 pt. crop restrictions.
(ET Herbicide) 0.208 EC 14 Emerged broadleaf and grass weeds. Apply as a preplant burndown treatment.
0.001 - 0.003
3 Annual broadleaf and grass weeds. Do not apply to muck soils. Mineral soils with 2 - 5% organic
0.5 1 pt. material, apply 0.75 lb. a.i./A. Incorporate 4 inches or less with 8 hr. of application. PHI 60 days.
5 lb.
*** POSTEMERGENCE ***
Carfentrazone (Aim) 1.9 EW 14 Emerged broadleaf weeds. Apply as hooded application to row middles only. Use crop oil concentrate or
oz. per cropping season. PHI 0 days.
up to 0.031
(Aim) 2.0 EC
Clethodim (Select, Arrow) 2 EC 1
volume. Nonionic surfactant with Select Max. PHI 30 days.
0.09 - 0.13
(Select Max) 1 EC
0.07 - 0.13
Fluazifop (Fusilade DX) 2 EC 1
60 days following application. In Palm Beach and Hendry counties a 60 day interval must be observed for
0.188
Linuron (Lorox DF) 50 DF 7 Apply after carrots are 3 inches tall. Repeat applications may be made but do not exceed 4 lb./A. Can be
applied following Stoddard Sovent provided that the applications are at least one day apart. Do not tank
mix with Stoddard Solvent.
0.5 - 1.0 1 - 2 lb.
Metribuzin
0.25
(Metribuzin, Metri, Tricor) 75 DF 5 Broadleaf and grass control. Total amount applied in a season should not exceed 0.5 lb. a.i./A. Apply
after carrots have 5 - 6 true leaves and weeds are less than 1 in. in height. If needed, a second
application may be made after an interval of at least 3 wk. PHI 60 days.
0.3 lb.
(Metri, Tricor) 4 F
0.5 pt.
Pelargonic acid (Scythe) 4.2 EC 27 Emerged broadleaf and grass weeds. Direct spray to row middles. Product is a contact, nonselective,
3 - 10% v/v foliar applied herbicide with no residual control. May be tank mixed with several soil residual compounds.
Prometryn (Caparol) 4 L 5 Most annual broadleaf and grass weeds. Apply up to 6 leaf stage of carrot. One application of 4 pt./A or
two application of 2 pt./A. For POST control of weeds, include NIS or COC. Consult label for rotational
crop restrictions. PHI 30 days.
1.0 - 2.0 2 - 4 pt.
S-metolachlor (Dual Magnum) 7.62 EC 15 Grass and broadleaf weeds and nutsedge. Label is a Third-Party Registration (TPR, Inc.). Use without a
signed authorization and waiver of liability is a misuse of the product.
Sethoxydim (Poast) 1.5 EC 1 Emerged grass weeds. A maximum of 5 pt./A applied in one season. Include a crop oil concentrate.
Unsatisfactory results may occur if applied to grasses under stress. PHI 30 days
0.28 - 0.38 1.5 - 2.0 pt.
278 2019 Vegetable Production Handbook of Florida