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.
Suppression only 19 OSO 5%SC 0 4 hr
(polyoxin D zinc salt)
21 Ranman 7 0.5
(cyazofamid)
22 & M3 Gavel 75DF 2.0 lb 12 lb 3 2 This product contains 66.7% mancozeb
so do not exceed maximum allowed for
mancozeb considering this and other
mancozeb-containing products.
(mancozeb + zoxamide)
22 & M5 Zing!
(zoxamide + chlorothalonil)
1.52 lb
zoxamide
and 8.8 lb
chlorothalonil
7 12 hr Do not make more than 2 consecutive
applications before switching to another
effective fungicide with a different mode of
action
27 Curzate 60DF 3.2 oz 22.4 oz 14 0.5 Limit is 7 apps/year. Use in combination
with a protectant fungicide. It is best to
alternate Curzate with other fungicides such
as mancozeb or chlorothalonil. Also labeled
for seed treatment
(cymoxanil)
27&M5 Ariston
(cymoxanil + chlorothalonil)
2 pt 17.5 pt
cymoxanil
and 11.25
lb a.i. chlorothalonil
14 12 hr
27 & 11 Tanos 8 oz 48 oz 14 0.5 Do not make consecutive applications.
Rotate to material with different mode of
action
(cymoxanil + famoxadone)
27, M3
& 1
Evolve 0.75 lb/100
lb cut seedpieces
1 Potato seed piece treatment
(cymoxanil + mancozeb + thiophanatemethyl)
28 Previcur Flex 1.2 pt 6.0 pt 14 0.5 Use with a tank mix. See label for seed
(propamocarb hydrochloride) piece treatment
29 Omega 500F 3.5 pt 14 2 Rate is higher for white mold.
30 Agri-tin, Super-Tin
(triphenyltin hydroxide)
See
individual
label
7 2
30 Super-Tin 80WP 18 7 2 For use with closed tractor cabs only.
Super Tin should be tank-mixed with another
fungicide
(triphenyltin hydroxide)
33
Fungi-Phite, Phiticide, Phostrol, ProPhyt,
Rampart, Reveille, (mono- and dipotassium
salts of phosphorous acid)
See
individual
label
40 Forum 6 oz 30 oz 4 0.5 Tank mix with another chemistry. Do not
make more than two sequential applications
before alternating to a non-group 40
fungicide
(dimethomorph)
40 Revus 14 4 hr Do not make more than 2 consecutive
(mandipropamid) applications
40 & 3 Revus Top 14 0.5 Do not make more than 2 consecutive
(mandipropamid + difenoconazole) applications
45 & 40 Zampro
(ametoctradin + dimethomorph)
42 4 12 hr Do not make more than 2 consecutive
applications
49 & M5 Orondis Opti
(oxathiapirolin +chlorothalonil)
2.5 pt 10 pt per A
per year
7 12 hr See label
49 & 40 Orondis Ultra
(oxathiapiprolin + manipropamid)
8
per A per
year
7 See label
2019 Vegetable Production Handbook of Florida 271