Table 12.5. Insecticides registered for managing insect pests of onions. (continued)
Labels change frequently. Be sure to read a current product label before applying any chemical.
Pest
MOA
Code1
Trade Name
(Active Ingredient)
*Restricted
Rate
(Product/acre)
REI
(hours)
Days to
Harvest Remarks2
23 Movento
(spirotetramat)
24 3
28 Exirel
(cyazypyr)
12 1 Do not apply more than 0.4 lb ai per acre of cyazypyr
or cyantraniliprole-containing products per season.
Toxic to bees. Rotate with other effective modes of
action. Begin making applications when populations
are low. If populations are above threshold, use an
effective knockdown product prior to applying Exirel.
28 Verimark
(cyantraniliprole)
drip chemigation 4 1 Do not apply more than 2 drip chemigation applica-
appear. Rotate with other effective modes of action.
- Aza-Direct
(azadirachtin)
1-2 pts, up to 3.5, if needed 4 0 Antifeedant, repellant, insect growth regulator.
OMRI-listed.
- Azatin XL
(azadirachtin)
4 0 Antifeedant, repellant, insect growth regulator.
- BotaniGard ES
(Beauveria bassiana)
0.5-2 qt/100 gal 4 0 May be used in greenhouses. Contact dealer for
recommendations if an adjuvant must be used. Not
compatible in tank mix with fungicides.
- M-Pede (potassium salts of
fatty acids)
1-2% V/V 12 0 OMRI-listed.
- Requiem EC (extract of
Chenopodium ambrosioides)
1.5-3.0 qt 4 0 Begin as soon as thrips are seen.
- 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.
Wireworms 1B *Diazinon AG500,
*Diazinon 50W
(diazinon)
AG500: 3-4 qt,
50W: 4-8 lb
72 preplant Do not make more than one soil application per year.
For onions, bulb and green.
1
codes (1 through 29) are used to distinguish the main insecticide mode of action groups, with additional letters for certain sub-groups within each main group. All insecticides
within the same group (with same number) indicate same active ingredient or similar mode of action. This information must be considered for the insecticide resistance
2 Information provided in this table applies only to Florida. Be sure to read a current product label before applying any product. The use of brand names and any mention or
listing of commercial products or services in the publication does not imply endorsement by UF/IFAS Extension nor discrimination against similar products or services not
mentioned. OMRI listed: Listed by the Organic Materials Review Institute for use in organic production.
* Restricted use insecticide.
Table 12.6. Onion fungicides ordered by disease and then FRAC group according to their mode of action. (continued)
Pertinent Diseases
Fungicide
Chemical
or Pathogens
Group1
(active ingredients)
Max. Rate/Acre Min. Days to
Applic. Season Harvest Reentry Remarks2
Labels change frequently. Be sure to read a current product label before applying any chemical.
Bacterial blight M1 (copper compounds) SEE INDIVIDUAL
LABEL
0 Varies by
(Xanthomonas foliar burn
axonopodis pv. allii)
product
from 4
hr to 2
days.
Frequent use of copper fungicides may cause
Many brands available:
Badge SC, Badge X2, Champ DP,
Ultra 40D, Cueva,Cuproxat, Kentan DF,
Kocide 2000, Kocide 3000, Kocide DF,
Kop-hydroxide, Master Cop, Nordox,
Nordox 75WG, Nu-Cop 3L, Nu-Cop
50DF, Nu-Cop HB
M1 & M3 Mankocide 2.25 lbs 160 lb
(per crop)
7 2 Do not apply to exposed bulbs.
(copper hydroxide + mancozeb)
2019 Vegetable Production Handbook of Florida 213