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.
M5 (chlorothalonil) SEE INDIVIDUAL
LABELS
0 1
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:
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
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.
M5 & 27 Ariston
(chlorothalonil + cymoxanil)
3.0 pt 17.5 pt 3 0.5 See label
4 & M5 Ridomil Gold Bravo SC
(mefenoxam + chlorothalonil)
3.25 pt See label 0 2 Limit is 4 appl/crop.
7 & 3 Aprovia Top
See label 0 0.5 See label for guidelines
7 & 12 Miravis Prime
1 0.5 Do not make more than two applications
of Miravis Prime or other Group 7 and 12
fungicides before alternation with a fungicide
that is not in Group 7 or 12.
19 SEE INDIVIDUAL
LABELS
0 4 h
Oso 5% SC
PH-D
(polyoxin D zinc salt)
21 Actigard 50WG 1 oz 8 oz 0 0.5 Apply preventively prior to disease
(acibenzolar-S-methyl) development. Suppression of disease.
Fusarium wilt 3 Proline 7 0.5 Limit is 1 soil application and 2 foliar
(prothioconazole) applications per year.
7 & 3 Propulse 7 0.5 Limit is 1 soil application and 2 foliar
applications per year. See label for harvesting
guidelines.
1 FRAC code (fungicide group): Number (1 through 46) and letter U is used to distinguish the fungicide mode of action groups. All fungicides within the same group (with same
number or letter) indicate same active ingredient or similar mode of action. This information must be considered for the fungicide resistance management decisions. U =
2 Information provided in this table applies only to Florida. Be sure to read a current product label before applying any chemical. The use of brand names and any mention or
listing of commercial products or services in the publication does not imply endorsement by UF/IFAS Extension nor discrimination against similar products or services not
mentioned.
2019 Vegetable Production Handbook of Florida 83