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.
������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������
Pythium diseases 4 Ridomil Gold GR 20 lb 40 lb 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.
(Pythium spp.) Ridomil Gold SL 2 pt 3 pt 7 2*
Ultra Flourish 2 pt 6 pt 7 2
(mefenoxam)
4 Metastar 2E 2 qt 6 qt 28 2 Soil applied by drip injection.
(metalaxyl)
14 Terramaster 4EC ������������ ������������������ 3 0.5 Greenhouse use only.
(etridiazole)
21 Ranman ����������������
100 gal
- 0 - For greenhouse transplant production; make
a single application to the seedling tray 1
week prior up to the time of transplanting.
Do not use any surfactant.
(cyazofamid)
28 Previcur Flex SEE INDIVIDUAL
LABELS
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)
28 Previcur Flex 1.5 pts/
treated
acre
7.5 pt/
treated
acre
5 0.5 (Root rots and seedling diseases) Applied
to lower portion of plant and soil, or as a soil
drench or drip irrigation.
(propamocarb hydrochloride)
28 Promess 1.5 pt 7.5 pt 5 0.5 Must tank mix with chlorothalonil or
(propamocarb hydrochloride) mancozeb.
33 Alude 1.5 qt/
acre/ 25
gal
- - 4 hr For transplants only.
(mono- and di-potassium salts of
phosphorous acid)
Rhizoctonia root rot,
Rhizoctonia fruit rot
(Rhizoctonia solani)
M5 (chlorothalonil) SEE INDIVIDUAL
LABELS
0 0.5 Use higher rates at fruit set and lower rates
Many brands available: before fruit set.
Bravo Ultrex, Bravo Weather Stik, Bravo
Zn, Chloronil 720, Echo 720, Echo 90 DF,
Echo Zn, Equus 500 Zn, Equus 720 SST,
Equus DF, Initiate 720
7 Fontelis ������������������������
oz/ 1000
row-ft
�������������� 0 0.5 Apply at-plant, pre-plant incorporated,
in-furrow, as a transplant drench, or by drip
irrigation.
(penthiopyrad)
7 & 3 Aprovia Top ������������������ ������������������ 0 0.5 No more than 2 sequential applications on a
7-day interval before rotating to a non-FRAC
group 7 fungicide; subsequent applications
on no shorter than a 14-day interval. Limit of
4 apps per a year. See label for surfactant
precautions. Not labeled for greenhouse use.
��������������������������������������������������������������������
(suppression) 11 Cabrio 16 oz 96 oz 0 0.5 Limit is 2 sequential applications before
alternating to another effective fungicide from
a different FRAC group.
(pyraclostrobin)
(suppression) 11 & 7 Priaxor ������������ �������������� 7 0.5 Limit is 3 apps per season; no more
than 2 sequential apps. See label about
compatibility with other formulated products
and adjuvants.
������������������������������������������������������������
14 Blocker 4F SEE INDIVIDUAL
LABELS
Soil
treatment
at
planting
0.5 See label for application type and restrictions
Terraclor 75 WP
(PCNB)
14 Par-Flo 4F ����������������
(PCNB) nurseries or greenhouse.
per 100
gal.
2 app. Soil
drench
0.5 Limited to only container-grown plants in
27 & M5 Ariston 1.9 pt 30.2 pt 3 0.5 Check copper manufacturer’s label for
��������������������������������������������������������������������������������
mixing with this product.
(cymoxanil + chlorothalonil)
2019 Vegetable Production Handbook of Florida 387