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.
Botrytis gray mold M3 (mancozeb) SEE INDIVIDUAL
LABELS
3 1
Many brands available:
Dithane M45, Dithane DF Rainshield,
Dithane F45 Rainshield,Fortuna 75WDG,
Koverall, Mancozeb Flowable, Manzate
Pro-Stick, Nubark Mancozeb, Penncozeb
4FL, Penncozeb 80WP, Penncozeb 75DF,
Roper DF Rainshield
M5 (chlorothalonil) SEE INDIVIDUAL
LABELS
7 0.5
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
(suppression) M3 & M5 Elixir
(mancozeb; chlorothalonil)
2 lb 18 lb 7 24 hr
3 Quash
(metconazole)
2.5 oz 7.5 oz 1 12 hr Follow resistance management
recommendations on label
7 Vertisan 7 0.5 Do not make more than 2 sequential
(penthiopyrad) applications
7 Endura 70WP
(boscalid)
10 oz 20 oz 10 0.5 Do not make more than 4 apps at low rate or
2 apps at high rate
(suppression) 7 & 9 Luna Tranquility 43.6 7 0.5 Do not make more than 2 sequential
applications
7 & 11 Priaxor
24 7 0.5 Do not make more than 2 sequential
applications
M5 & U15 Orondis Opti
(chlorothalonil + oxathiapiprolin)
2.5 pt 10 pt per A
per year
7 12 hr See label
9 Scala SC
(pyrimethanil)
7 0.5 Use only in a tank mix with labeled fungicide
for early blight
(suppression) 11 & 4 Quadris Ridomil Gold
(azoxystrobin + mefenoxam)
oz./1000 ft.
of row
See label 0 Apply at planting
12 & 7 Miravis Prime
year
14 12 hr
Early blight M1 (copper compounds) SEE INDIVIDUAL
LABELS
Varies by
product
from 0 to
1 day
Varies
by
product
from 4
hr to 2
days
(Alternaria solani) Many brands available: Americop,
Badge SC, Badge X2, Basic Copper
53, COC DF, COC WP, COCS WDG,
Champ DP Dry Prill, Champ 2 FL, Champ
MZ Disperss, Copper sulfate crystals,
Copper-Z 4/4, , Cueva, Kentan DF,
Kocide 2000, Kocide DF, Kocide 3000,
Nordox 75WG, Nu Cop 50WP, Nu-Cop
3L, Nu-Cop 50DF, Nu-Cop HB, Quimag
Copper Sulfate Crystal
M1 & M3 ManKocide 61.1DF 5 lb 74.66 lb 3 2
(copper hydroxide + mancozeb)
M3 (mancozeb) SEE INDIVIDUAL
LABELS
3 1 Limit is 11.2 lb of active ingredient per a
Many brands available: crop.
Dithane M45, Dithane DF Rainshield,
Dithane F45 Rainshield,Fortuna 75WDG,
Koverall, Mancozeb Flowable, Manzate
Pro-Stick, Nubark Mancozeb, Penncozeb
4FL, Penncozeb 80WP, Penncozeb 75DF,
Roper DF Rainshield
M3 Polyram 80DF
(metiram)
2 lb 14 lb 3 1 Limit is 7 appl./season
2019 Vegetable Production Handbook of Florida 267