Table 15.13. Sweetpotato fungicides ordered by disease and then FRAC group according to their mode of action. (continued)
Pertinent Diseases
Fungicide
or Pathogens
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.
Sulfur 80 WDG
(sulfur)
10 lb 1 OMRI-listed. Apply at early leaf stage; Repeat
every 14 days or as needed
7 & 3 Aprovia Top
14 12 hr Apply on a 14-day interval; Do not apply more
than 2 consecutive applications; Addition
of a spreading/penetrating type adjuvant is
recommended.
3 & 7 Miravis Top
14 12 hr An adjuvant may be added at recommended
rates; Minimum application interval is 7 days
7 & 12 Miravis Prime
14 12 hr A adjuvant may be added at recommended
rates
11 & 3 Quadris TOP
(azoxystrobin; difenoconazole)
14 12 hr Make no more than 2 consecutive applications;
Seed decay, damping-off,
seedling blight caused by
soil pathogens
12 Maxim 4FS
100 lb seed
0 12 hr Not effective against Pythium; tank mix with
others for Pythium control
Various soil-borne
diseases
11 Many brands
(azoxystrobin)
Various,
See label
Various,
See label
See label 4 hr See label.
1 FRAC code (fungicide group): Number (1 through 45) and letters (U and P) are 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
Code List 2019; http://www.frac.info/ (FRAC = Fungicide Resistance Action Committee).
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.
Table 15.14. Non-fumigant nematicides for sweetpotato in Florida.
Product Application Directions
Nimitz
All applications must be incorporated either physically or via drip or overhead irrigation. Make preplant applications at a rate of 3.5 to 7 pints, (56.0 to
nematodes. Growers applying Nimitz must consult the product label to observe the plant-back (recropping) intervals for a variety of leafy vegetables and
brassica crops, onions, bananas, sugarcane, and other crops.
310 2019 Vegetable Production Handbook of Florida
/