Table 10.3. Herbicides approved for managing weeds in celery. (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
*** POSTTRANSPLANT / 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
Nonionic surfactant with Select Max. PHI 30 days.
0.09 - 0.13
(Select Max) 1 EC
0.07 - 0.13
Linuron (Lorox DF) 50 DF 7 Broadleaf and grass weeds. Apply after transplanting but before celery is 8 in. tall. Do not apply when
0.5 - 1.0 1 - 2 lb. temperatures exceed 85°F nor as a tank mix with surfactants, nitrogen, or fertilizer solution. PHI 45 days.
Pelargonic acid (Scythe) 4.2 EC 27 Emerged broadleaf and grass weeds. Direct spray to row middles with hooded or shielded sprayer. Product
is a contact, nonselective herbicide with no residual control. May be tank mixed with several soil residual
compounds.
3 - 10% v/v
Prometryn (Caparol) 4 L 5 Broadleaf weeds. Apply one application during the 2 to 6 week period after transplanting. Weeds should not
0.8 - 1.6 1.6 - 3.2 pt. exceed 2 in.
S-metolachlor (Dual Magnum) 15 Broadleaf, grass weeds, and nutsedge. Label is a Third Party Registration (TPR, Inc.) and authorization and
0.95 - 1.26 1.0 - 1.33 pt. waiver agreements must be obtained prior to use. Rates are based on organic matter
Sethoxydim (Poast) 1.5 EC 1 Emerged grass weeds. A maximum of 3 pt./A per season. Include a crop oil concentrate. Unsatisfactory
0.28 1.5 pt. results may occur if applied to grasses under stress. PHI 30 days.
*** CELERY SEEDBEDS ***
Prometryn (Caparol) 4 L 5 Broadleaf weeds. Apply once per year to seedbeds. Apply after celery has 2-5 true leaves. Apply after
0.6 - 0.8 1.2 - 1.6 pt. seedbed covers have been removed for at least one week.
Table 10.4. Herbicides approved for managing weeds in okra. (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
*** PREEMERGENCE ***
Carfentrazone (Aim) 1.9 EW 14 Apply as a preplant burn down for emerged broadleaf weeds. Use crop oil concentrate, methylated seed oil,
or nonionic surfactant at recommended rates. Maximum rate of 0.096 lb. a.i./A per season. No pretransplant
interval.
up to 0.031
(Aimt) 2 EC
Flumioxazin (Chateau) 51 WDG 14 Annual broadleaf weeds. Apply to row middles of raised plastic mulched beds that are at least 4 in. higher
than the treated row middle and 24 in. bed width. Label is a Third-Party Registration (TPR, Inc.). Use without
a signed authorization is a waiver of liability is a misuse of the product. Tank mix with a burn down herbicide
to control emerged weeds. 0 day pretransplant interval.
up to 0.128 up to 4 oz.
Glyphosate (various formulations) 9 Emerged broadleaf and grass weed control. Apply as a preplant burn down for emerged weeds. Read label
consult labels for individual product directions.
Lactofen (Cobra) 2 EC 14
required for residual control. Add a crop oil concentrate or nonionic surfactant for control emerged weeds.
Registration is through Third Party Registrations, Inc. (TPR, Inc.) and a copy of the label must be on-hand at
time of application. PHI 30 days.
0.25 - 0.5
Mesotrione (Callisto) 4 L 28 Broadleaf and grass weeds. Apply to row middles only. Leave one foot untreated area or 6” on either side of
the plant row. Injury risk is greatest on coarse textured soils (sand, sandy loam, or loamy sand). Apply as
one preemergence application OR one postemergence application. Callisto will cause whitening of the okra
leaves.
0.19
Paraquat (Gramoxone) 2 SL 22 Emerged broadleaf and grass weed control. Apply one application before crop emergence. Do not exceed 8
0.5 - 1.0 2.0 - 4.0 pt. pt./A per season. Consult label for new restrictions.
Pelargonic acid (Scythe) 4.2 EC 27 Broadleaf and grass weeds. Scythe is a contact, nonselective herbicide with no residual activity. May be
3 - 10% v/v
146 2019 Vegetable Production Handbook of Florida