Table 18.4. Tomato 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.
22 & M3 Gavel 75DF 2.0 lb 16 lb 5 2
(zoaximide + mancozeb)
40 & 3 Revus Top 1 0.5 4 apps per season; no more than 2
(mandipropamid + difenoconazole) sequential apps. Not labeled for transplants.
U15 + M5 Orondis Opti 2.5 pt 10 pt 0 4 hr Do not use Orondis Opti following a soil app.
of another oxathiapiprolin product. No more
than 2 sequential apps. before rotating to
another mode of action; 7 day minimum app.
interval. Applications of Orondis Opti should
not exceed more than 33% of the total
foliar fungicide apps., or 4 apps. per crop,
whichever is fewer. Limit on multiple crops
is 6 apps. per acre per year. Not labeled for
greenhouse use.
(oxathiapiprolin + chlorothalonil)
Phytophthora crown
rot, Phytophthora root
rot (Phytophthora spp.)
4 Ridomil Gold SL 1 pt 3 pt 28 2* Do not apply more than 1.5 lb mefenoxam/A
per crop to the soil. *There is a reentry
interval exemption if material is soil-injected
or soil-incorporated.
Ultra Flourish 2 pt 6 pt 7 2*
(mefenoxam)
4 Metastar 2E 2 qt 6 qt 2 28 Soil applied by drip injection.
(metalaxyl)
11 Reason 500 SC 8.2 oz 24.6 lb 14 0.5 Must alternate with a fungicide from a
different FRAC group. (Phytophthora capsicisuppression
only)
(fenamidone)
14 Terramaster 4EC 3 0.5 Greenhouse use only.
(etridiazole)
21 Ranman 0 Apply to the base of plant at the time of
transplanting. Make additional applications
on a 7 to 10 day schedule if conditions are
favorable for disease.
(cyazofamid)
28 Previcur Flex SEE LABEL 5 0.5 GREENHOUSE APPLICATION: 6 apps/
crop cycle. Do not mix with other products.
Can cause phytotoxicity if applied in intense
sunlight.
(propamocarb hydrochloride)
33 Aliette 80 WDG 5 lb 2 lb 14 0.5 See label for warnings concerning the use of
Linebacker WDG copper compounds.
(fosetyl-aluminum)
33 Alude 1.5 qt/
acre/ 25
gal
- - 4 hr For transplants only.
(mono- and di-potassium salts of
phosphorous acid)
43 Presidio 2 0.5 4 apps per season; no more than 2
sequential apps. 10 day spray interval; Tank
mix with another labeled non-FRAC code
43 fungicide; 18 month rotation with off label
crops.
45 & 40 Zampro 4 0.5 Addition of a spreading or penetrating
adjuvant is recommended to improve
performance. Limit of 3 applications per
season.
(ametoctradin + dimethomorph)
U15 Orondis Gold 200 0 4 hr Soil applications cannot be combined or
followed by foliar applications of Orondis
Opti or Orondis Ultra. No more than 2
sequential apps. before rotating to another
mode of action; 7 day minimum app. interval.
Applications of Orondis Gold should not
exceed more than 33% of the total fungicide
apps., or 4 apps. per crop, whichever is
fewer. Limit on multiple crops is 6 apps. per
acre per year. Not labeled for greenhouse
use.
(oxathiapiprolin)
384 2019 Vegetable Production Handbook of Florida