Table 14.4. Potato fungicides ordered by disease and then FRAC group according to their mode of action. (continued)
Pertinent Diseases
Fungicide
or Pathogens
Group1
Chemical
(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.
M3 & M5 Elixir
(mancozeb; chlorothalonil)
2 lb 18 lb 7 24 hr
M5 & 49 Orondis Opti
(chlorothalonil + oxathiapiprolin)
2.5 pt 10 pt per A
per year
7 12 hr See label
M5 (chlorothalonil) SEE INDIVIDUAL
LABELS
7 0.5 Read label for application directions
Many brands available:
Bravo Ultrex, Bravo ZN, Bravo Weather
Stik 6L, Chloronil 720, Chlorothalonil
720SC, Echo 90DF, Echo 720, Echo ZN,
Equus DF, Equus 500 ZN, Equus 720SST,
Initiate 720, Initate ZN, Orondis Opti B
2 Enclosure 4 2 pt 8 pt 14 1 Limit is 4 appl./crop. See individual label for
Iprodione 4L additional information.
Nevado 4F
Rovral 4F
(iprodione)
3 Quash
(metconazole)
2.5 oz 7.5 oz 1 12 hr Follow resistance management
recommendations on label
4 & M3 Ridomil Gold MZ 2.5 lb See label 3 2 Also labeled for storage rots (Pink Rot and
(mancozeb + mefenoxam) Leak)
4 & M5 Ridomil Gold Bravo SC 2.5 pt See label 14 2 Limit is 4 appl./crop. Also labeled for storage
(chlorothalonil + mefenoxam) rots (Pink Rot and Leak)
7 Endura 70WP 10 oz 20 oz 10 0.5 Do not make more than 4 apps at low rate or
(boscalid) 2 apps at high rate
7 Vertisan 7 0.5 Do not make more than 2 sequential
(penthiopyrad) applications
7 Velum Prime
See label
for ground
or aerial
application
rates
See label
for ground
or aerial
application
rates
7 12 hr Do not make more than 2 sequential
applications
7 & 11 Priaxor 24 7 0.5 Do not make more than 2 sequential
applications
9 Scala SC 7 0.5 Use only in a tank mix with labeled fungicide
(pyrimethanil) for early blight
11 Evito 480SC, Aftershock 7 0.5 Limit is 6 application per crop and alternate
with non-group 11 chemistry
11 Gem 500SC, Flint Extra
(trifoxystrobin)
7 0.5 Limit is 6 application per crop and alternate
with non-group 11 chemistry
11 Headline 2.09F 3 0.5 Alternate with non-group 11 chemistry
(pyraclostrobin) between applications.
11 Reason 500SC
(fenamidone)
14 0.5 Alternate with non-group 11 chemistry
between applications
11 Aframe, Azoxystar, Azoxyzone, Equation,
Satoria, Trevo, Quadris, Willowood Azoxy
See
individual
labels
Alternate with non-group 11 chemistry
between applications. See label for
(azoxystrobin) soilborne disease applications
11 & M5 Quadris Opti
(azoxystrobin + chlorothalonil)
1.6 pt See label 14 0.5 Alternate with non-group 11 chemistry
between applications
11 & M3 Cabrio Plus 2.9 lb 17.4 lb 3 1 Do not make more than two sequential
(pyraclostrobin + metiram) applications
11 & M3 Quadris Top 14 0.5 Do not make more than 2 consecutive applications
before switching to another effective
fungicide with a different mode of action
(azoxystrobin & difenoconazole)
12 & 7 Miravis Prime
year
14 12 hr
19 OSO 5%SC
(polyoxin D zinc salt)
0 4 hr
268 2019 Vegetable Production Handbook of Florida