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.
������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������
M1 & M2 Top cop with sulfur 3 qts See label 0 1 Do not use during hot weather or within 4
(basic copper sulfate + sulfur) weeks of an oil application.
M1 & M3 Mankocide 2.25 lbs 160 lb
(per crop)
7 2 Do not apply to exposed bulbs.
(copper hydroxide + mancozeb)
2 (iprodione) SEE INDIVIDUAL
LABEL
7 1
Many brands available:
Enclosure 4, Iprodione 4L AG, Meteor,
Nevado 4F, Rovral 4 Flowable
3 (propiconazole) SEE INDIVIDUAL
LABEL
See label 0.5
Many brands available:
Amtide proiconazole 41.8% EC, Bumper
41.8 EC, Bumper ES, Fitness,Propimax
EC, Propistar EC, Tide Propionazole
EC, Tilt, Shar-Shield PPZ
3 (tebuconazole) SEE INDIVIDUAL
LABEL
7 0.5
Many brands available:
Monsoon, Onset 3.6L, Orius 3.6 F,
Tebu-Crop 3.6F, Tebustar 3.6 L, Tebuzol
3.6F, Toledo
3 & 7 Luna Experience
����������������������������������������������������
������������������ ������������������ 7 0.5 Alternate with fungicides of dissimilar modes
of action.
3 & M5 Muscle ADV
(tebuconazole + chlorothalonil)
1.6 pt 3.2 pt 7 0.5 Apply in a protective fungicide schedule.
4 & M5 Ridomil Gold Bravo SC, See label 7 (dry
bulb);
14/21
(green)
2
(mefenoxam + chlorothalonil)
7 Endura
(boscalid)
6.8 oz 41 oz 7 0.5 Alternate applications with a different fungicide
group.
7 Fontelis
(penthiopyrad)
�������������� �������������� 3 0.5 See label
7 & 9 Luna Tranquility
����������������������������������������������������
�������������� ������������������ 7 0.5 Do not make more than 2 applications per
year.
7 & 11 Merivon Xemium
��������������������������������������������������������������
�������������� �������������� 7 0.5 Alternate with fungicides of dissimilar modes
of action.
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.
11 Quadris, See label ������������������ See label 4 hr Alternate applications with a different fungicide
(azoxystrobin) group.
11 Reason 500SC ���������������� �������������� 7 0.5 Alternate applications with a different fungicide
(fenamidone) group.
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
(cyprodinil + difenoconazole) alternate with a different fungicide group.
(green);
7 (dry
bulb)
0.5 Do not make more than 2 applications before
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 for 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(
2019 Vegetable Production Handbook of Florida 219