Table 7.11. Cucurbit fungicides ordered by disease and then FRAC group according to their mode of action. (continued)
Pertinent Diseases
or Pathogens
Fungicide
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 (mancozeb) SEE INDIVIDUAL
LABELS
5 1
Many brands available:
Dexter Max, Dithane DF Rainshield, Dithane
F45 Rainshield, Dithane M45, Fortuna
75WDG, Koverall, KOVERALL, Manzate
Max, Manzate Pro-Stick, Penncozeb 75DF,
Penncozeb 80WP, Protect DF, Roper DF
Rainshield
M5 (chlorothalonil) SEE INDIVIDUAL
LABELS
0 1
Recommended maximum rate is less for
downy mildew. Follow label recommendations
on watermelon after fruit set. Do not apply
to mature watermelons under dry, hot and
other environmental conditions as indicated
on the label.
Many brands available:
Arius ADV, Bravo Ultrex, Bravo Weather Stik,
Bravo ZN, Choloronil 720, Chlorothalonil 720,
Chlorothalonil 720 SC, Echo 720, Echo 90 DF,
Echo ZN, EQUUS 720 SST, Equus 720 SST,
Equus DF, Initiate 720, Initiate ZN, Orondis
Opti B, Praiz
U15 & 40 Orondis Ultra
(oxathiapiprolin + mandipropamid)
year
0 4 h Make no more than 2 sequential applications
before rotating to a fungicide with a different
mode of action. Check label for additional
details.
4 & M1 Ridomil Gold Copper 2 lb 8 lb 5 2 Limit is 4 appl/crop
(mefenoxam + copper hydroxide)
4 & M3 Ridomil Gold MZ WG 2.5 lb 10lb 5 2 Limit is 4 appl/crop. Rate for downy mildew
(mancozeb + mefenoxam) is lower.
4 & M5 Ridomil Gold Bravo SC 2.5 pt See label 0 2 Limit is 4 appl/crop.
(mefenoxam + chlorothalonil)
M5 & U15 Orondis Opti
(chlorothalonil + oxathiapiprolin)
2.5 pt 10 pt/
year
0 0.5 Check label for additional guidelines. Make
no more than 2 sequential applications before
rotating to a fungicide with different mode of
action.
3 & 33 Viathon 4 pt 12 pt 7 0.5 Disease suppression only. See label
(tebuconazole + potassium phosphite)
7 & 11 Pristine 18.5 oz 74 oz 0 0.5 Limit is 4 appl/crop & alternate chemistry.
(boscalid + pyraclostrobin)
7 & 11 Merivon
0 0.5 (Downy mildew suppression only). Do not
make more than one application before
alternating to a non-FRAC 7 or non-FRAC 11
group fungicide.
11 Cabrio 20 EG 0 0.5 Maximum number of sequential applications
is one. Maximum rate is less for downy
mildew.
(pyraclostrobin)
11 Evito 480 SC, Tepera
See label See label See
label
See label See label
11 Flint Extra, Flint 4 oz 8 oz 0 0.5 (Disease suppression) Limit is 4 appl/crop &
alternate chemistry. Maximum rate is higher
for downy mildew suppression.
11 (azoxystrobin) SEE INDIVIDUAL
LABELS
1 4 hr Limit is 4 appl/crop & alternate chemistry. See
label for tankmixing restrictions.
Many brands available: A-Zox 25SC, Acadia
2 SC, Aframe, Azoxy 2SC, Azoxy 2SC Prime,
AzoxyStar, Azoxyzone, AZteroid FC, Equation,
Equation SC, Mazolin, Quadris, Satori,
Tetraban, Trevo
11 Reason 500SC 22 oz 14 0.5 See label
(fenamidone)
11 & 3 Topguard EQ See label 1 0.5
74 2019 Vegetable Production Handbook of Florida