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.
M1 & M3 ManKocide 3 lb 24 lb 5 2 Some cantaloupe varieties are sensitive.
(copper hydroxide + mancozeb) Check label for details.
M2 (sulfur) SEE INDIVIDUAL
LABELS
1 See individual label. Do not use when
temperatures are greater than 90° F or on
sulfur-sensitive varieties. Check label for use.
Many brands available:
Acoidal, Cosavet DF, Cosavet DF Edge,
Crusade DF, Defend DF, Micronized Wettable
Sulfur, Micro Sulf, Suffa, Sulfur 6L, Sulfur
90W, Thiolux
M2 + 3 Unicorn 3.75 lb 15 lb 14 0.5 Suppression only. Only available for use on
(sulfur + tebuconazole) certain crops, see label for details.
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:
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
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.
U8 Prolivo 300 SC
(pryriofenone)
year
0 Do not make more than 2 sequential
applications before rotating to another
fungicide with a different mode of action.
1 (thiophanate-methyl) SEE INDIVIDUAL
LABELS
1 1 Follow resistance management guidelines
Many brands available: 3336 EG, 3336 F, indicated on the label.
3336 WP, Cercobin, Incognito 4.5F, Incognito
85 WDG, T-Methyl 4.5 AG, T-Methyl 70 WP,
Talaris 4.5F, Talaris 70 WSB, T-Methyl 4.5 F,
Thiophanate methyl 85WDG, TM 4.5 F, Topsin
4.5 FL, Topsin M WSB
3 Rally 40WSP 5 oz 1.5 lb 0 1 Note that a 30 day plant-back restriction
exists. Follow resistance management
guidelines on label.
(myclobutanil)
3 (tebuconazole) See label 7 0.5 Maximum rate is lower for powdery mildew.
Many brands available: Monsoon, Onset
3.6L, Orius 3.6F, Teb 3.6 SC, Tebu-Crop 3.6F,
Tebuconazole 3.6 F, Tebustar 3.6L, Tebuzol
3.6F, Toledo, Vibe
3 Procure 480SC, Trionic 4 SC 0 0.5 Follow resistance management guidelines
on label.
3 Proline 7 0.5 Limit is 1 soil application and 2 foliar
(prothioconazole) applications per year.
3 Mettle 125 ME
(tetraconazole)
year
0 0.5 Make no more than 2 sequential applications
before rotating to another fungicide with
alternate mode of action
3 & M5 Muscle ADV 1.6 pt 6.4 pt 7 0.5
(tebuconazole + chlorothalonil)
3 Topguard 0 0.5
3 Rhyme
year
0 0.5 Do not apply more than 2 sequential
applications before rotating with a different
FRAC group fungicide
M2 + 3 Unicorn 5 lb 15 lb 14 0.5 Suppression only. Only available for use on
(sulfur + tebuconazole) certain crops, see label for details.
3 & 33 Viathon 3 pt 12 pt 7 0.5
(tebuconazole + potassium phosphite)
2019 Vegetable Production Handbook of Florida 79