Table 12.3. Herbicides approved for managing weeds in onion. (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 Crops Weeds controlled / remarks
Dimethanamid-p (Outlook) 6 EC 15 Onion (dry bulb), garlic, leek, shallot
(dry bulb, green)
Broadleaf and grass weeds. Apply after the 2 true-leaf stage. Apply
as a single application or split application. Split application of 10 - 14
up to 1.0
Fluazifop (Fusilade DX) 1 Onion (dry bulb), garlic
0.188 oz./A per season. Include a COC or NIS. PHI 45 days.
(Goal 2 XL) 2 EC 14 Onion (dry bulb), garlic (dry bulb) Certain broadleaf weeds. Direct seeded only. Apply after the crop
has 2 true leaves. Multiple treatments can be applied and do not
exceed 0.5 lb. a.i./A. Necrotic lesions, twisting, or stunting of plants
can occur if applications are made during cool, wet weather or prior
to development of true leaves. PHI 60 days.
0.5 0.5 pt. direct seeded
(GoalTender) 4 EC
0.25 pt. direct seeded
Sethoxydim (Poast) 1.5 EC 1 Onion (dry bulb, green), garlic, leek,
0.19 - 0.28 1.0 - 1.5 pt. shallot
per season. PHI 30 days.
3 Onion (dry bulb) Broadleaf and grass weeds. Apply at layby to the soil surface
Grass weeds. Include a surfactant. Do not apply more than 4.5 pt./A
between onion rows. Remove weeds that are present. Do not apply
in muck soils. PHI 60 days.
0.35 - 0.5 0.75 - 1.0 pt.
3.75 - 5.0 lb.
Table 12.4. Insecticides labeled for management of arthropod pests of garlic, leeks, and shallots. (continued)
Labels change frequently. Be sure to read a current product label before applying any chemical.
Insect or
MOA
mite pest
Code1
Trade Name
(Active Ingredient)
*Restricted
Rate
Product/acre
REI
(hours)
Days to
Harvest Remarks2
Aphids 1B Malathion 5EC, 8F
(malathion)
5EC: 1.5-2.5 pt;
8F: 1-1.56 pt
24 3 Leeks, shallots, garlic. Three applications per year
for garlic, two for all others.
3A *Mustang
(zeta-cypermethrin)
2.4-4.3 oz 12 7 Do not apply more than 21.5 oz per acre per season.
Leeks, shallots, and garlic.
3A *Warrior II
(lambda-cyhalothrin)
24 14 For bulb crops only (garlic). Do not apply more than
-- Aza-Direct
(azadirachtin)
1-2 pts, up to 3.5, if needed 4 0 Antifeedant, repellant, insect growth regulator. OMRIlisted.
-- Azatin XL
(azadirachtin)
4 0 Antifeedant, repellant, insect growth regulator.
-- BotaniGard ES
(Beauveria bassiana strain
GHA)
0.25 - 1 quart per acre. Apply in
typically 5 - 100 gallons per acre.
4 0
– Grandevo
(Chromobacterium subtsugae
strain PRAA4-1)
1-3 lb 4 0 Leek, garlic, shallot
-- M-Pede 49% EC Soap,
insecticidal
1-2% V/V 12 0 OMRI-listed.
-- Neemix 4.5 EC
(azadirachtin)
12 0 OMRI-listed.
-- Neemix 4.5 EC
(azadirachtin)
12 0 OMRI-listed.
-- Trilogy
(extract of neem oil)
0.5-2.0% V/V 4 0 Apply morning or evening to reduce potential for
leaf burn. Toxic to bees exposed to direct treatment.
OMRI-listed.
Beet Armyworm 1A *Lannate LV; *SP
(methomyl)
LV: 1.5 pt; SP: 0.5 lb 48 7 Garlic only.
2019 Vegetable Production Handbook of Florida 205