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.
(Suppression only) 11 Cabrio EG 12 oz 72 oz 7 0.5 Alternate applications with a different fungicide
(pyraclostrobin) group. Make no more than 5 applications/crop.
9 & 3 Inspire Super See label 14
(green);
7 (dry
bulb)
0.5 Do not make more than 2 applications before
(cyprodinil + difenoconazole) alternate with a different fungicide group
11 & M5 Quadris Opti 3.7 pt See label 14 0.5 Alternate applications with different fungicide
groups. Make no more than 3 applications/
crop. Do not tank mix with COC, MSO, or
silicon adjuvant.
(azoxystrobin + chlorothalonil)
11 & 3 Quadris Top 7 0.5 Make no more than 1 application before
alternating to another fungicide with a non-QoI
(Group 11) mode of action
(azoxystrobin + difenoconazole)
11 & 3 Quilt Xcel
azoxystrobin + propiconazole) group 11 fungicide
oz (green)
14 (dry
bulb); 0
(green)
0.5 Make only 1 appl. before alternating to a non(
11 & 7 Pristine 18.5 oz 111 oz 7 0.5 Do not make more than 2 consecutive
(pyraclostrobin + boscalid) applications. No more than 6 appl/ crop.
9 & 12 Switch 62.5WG 14 oz 56 oz 7 0.5 Do not make more than 2 consecutive appl.
Do not plant crops not on the label for 30 days
after last appl.
22 & M5 Zing
(zoxamide + chlorothanil)
7.5 qt 7 0.5 Do not make more than 8 applications per
year.
29 Omega 500F 1 pt 6 pt 7 2
Botrytis neck rot M3 (mancozeb) SEE INDIVIDUAL
LABEL
7 1 Do not apply to exposed bulbs
(Botrytis allii) Many brands available:
Dithane DF, Dithane F45, Dithane M45,
Koverall, Manzate, Manzate Pro-Stik,
Penncozeb 4FL, Penncozeb 75DF,
Penncozeb 80WP, Roper DF
M5 (chlorothalonil) SEE INDIVIDUAL
LABEL
7 (dry
bulb); 14
(green)
1
Many brands available:
Bravo Ultrex, Bravo Weather Stik,
Bravo Zn, Chloronil 720, Chlorothalonil
720 EC, Echo 720, Echo 90 DF, Echo
Zn, Equus 500 Zn, Equus 720 SST,
Equus DF, Initiate 720, Initiate ZN
2 (iprodione) SEE INDIVIDUAL
LABEL
7 1
Many brands available:
Enclosure 4, Iprodione 4L AG, Meteor,
Nevado 4F, Rovral 4 Flowable
7 Fontelis 3 0.5
(penthiopyrad)
14 Botran 5F 3.5 lbs See label 14 See label
(DCNA dicloran)
(Suppression only) 9 Vangard WG 10 oz 28 oz 7 0.5 Do not make more than 2 consecutive
(cyprodinil) applications.
9 Scala SC 7 0.5 Do not make more than 2 consecutive
(pyrimethanil) applications.
(Suppression only) 11 & M5 Quadris Opti 3.7 pt See label 14 0.5 Alternate applications with different fungicide
groups. Make no more than 3 applications/
crop. Do not tank mix with COC, MSO, or
silicon adjuvant.
(azoxystrobin + chlorothalonil)
11 & 7 Pristine 18.5 oz 111 oz 7 0.5 Do not make more than 2 consecutive
(pyraclostrobin + boscalid) applications.
No more than 6 applications/ crop
2019 Vegetable Production Handbook of Florida 215