Southeastern U.S. Vegetable Crop Handbook - 2021 - 255

DISEASE CONTROL
TABLE 3-30. DISEASE CONTROL PRODUCTS FOR POTATO, IRISH (cont'd)
I. Meadows, Plant Pathologist, North Carolina State University (Not updated in 2020)
Disease
Early blight,
White mold
(cont'd)
Material
fluopyram
(Luna Privilege)
FRAC
Code
7
Rate of Material
Formulation
4.0 to 5.47 oz/acre
(ground);
2.82 oz/acre (aerial)
fluopyram + pyrimethanil
(Luna Tranquility)
fluxapyroxad + pyraclostrobin
(Priaxor)
iprodione (various)
metconazole
(Quash)
metiram + pyraclostrobin
(Cabrio Plus)
7+9
7+11
11.2 oz/acre
4 to 8 oz/acre
7
7
0.5
0.5
Minimum Days
Harv. Reentry Method, Schedule, and Remarks
0.5
7
Use on a 5 to 7-day interval. Do not apply more than 10.95
oz/acre/season for ground application and no more than
8.46 oz/acre/season for aerial application. Do not make more
than 2 applications before alternating with a fungicide with a
different mode of action. For white mold, use 5.47 oz rate.
Apply at 7 to 14 day intervals. Do not make more than 2 sequential
applications without switching to a fungicide outside
of Group 7 or Group 9.
Apply at 7 to 14 day intervals. Do not apply more than
24 oz/acre/season including in furrow and foliar uses. Use 6
to 8 oz/acre for SUPPRESSION of white mold. Maximum
of 3 applications.
2
3
M+11
See label
2.5 to 4 oz/acre
2.0 to 2.9 lb/acre
14
1
14
1
0.5
1
Rates may vary depending on the product.
Limit 16 oz/acre/season. Make no more than 2 applications
before changing modes of action. Limit to 4 applications per
year. Use the 4 oz rate for white mold.
Apply at 7 to 14 day intervals. Do not apply more than
17.4 lb/acre product per season. Do not apply more than 2
sequential applications before alternating with a fungicide
with a different mode of action. Use at 2.9 lb/acre rate for
SUPPRESSION of white mold.
penthiopyrad
(Vertisan)
7
10 to 24 oz/acre
7
0.5
Apply at 7 to 14 day intervals. Make no more than 2 applications
before alternating with a fungicide with a different mode
of action. For SUPPRESSION of white mold, use at 14 to
24 oz/acre. Do not exceed 72 oz per acre per year. Do not
apply more than 11.25 oz a.i. per acre per year in total from
any combination of seed, soil, or foliar applications.
pyraclostrobin
(Headline; Headline SC)
11
6 to 12 fl oz/acre
3
0.5 DO NOT exceed more than six foliar applications or 72 total
oz of product per acre per season. For early blight, use 6 to
9 oz rate; for SUPPRESSION of white mold, use 6 to 12
oz rate, depending on weather conditions and disease pressure.
Do not apply more than one time before alternating
with a fungicide with a different mode of action.
pyrimethanil
(Scala SC)
thiophanate-methyl (various)
Late blight,
White mold
fluazinam
(Omega) 500 F
9
1
29
7 fl oz/acre
See label
5.5 to 8 fl oz/acre
7
See
label
14
0.5
0.5
0.5
Apply at 7 to 14 day intervals. Do not apply more than
35 fl oz/acre/season. For control of early blight only.
Rates may vary depending on the product.
Begin applications when plants are 6 to 8 in. tall or when
conditions favor disease development. Repeat applications
at 7 to 10 day intervals. For late blight, use the 5.5 fl oz
rate. DO NOT apply more than 3.5 pt per acre during each
growing season.
Early blight,
Late blight
azoxystrobin (various)
azoxystrobin + chlorothalonil
(Quadris Opti)
chlorothalonil (various)
chlorothalonil + cymoxanil
(Ariston)
chlorothalonil + zoxamide
(Zing!)
11
11+M
M
M+27
M+22
See label
1.6 pt/acre
See label
2 pt/acre
24 to 34 fl oz/acre
14
14
7
14
7
4 hr
0.5
0.5
0.5
0.5
Rates may vary depending on the product. Do not apply
more than one application without alternating away from fungicides
in Group 11. See label for limits of active ingredients
Apply at 5 to 7 day-intervals. Do not apply more than one
application without alternating away from fungicides in
Group 11. See label for limits of active ingredients.
Rates may vary depending on the product.
Apply at 5-7 day intervals. Do not exceed 17.5 pt of product
per acre per 12-month period.
Apply at 5 to 7 day intervals. Do not make more than 2
sequential applications before alternating with a fungicide
that has a different mode of action. Do not make more than
8 applications per acre per season. Use 30 to 34 fl oz rate
for late blight.
fixed copper (various)
cymoxanil + famoxadone
(Tanos)
M1
27 + C3
See label
6 to 8 oz/acre
14
1
0.5
See label. Rates vary depending on the formulation.
Use rate of 6 fl oz only for early blight. Do not apply more
than 48 oz/acre per crop season and no more than 72 oz/
acre per 12 months. Do not make more than one application
before alternating with a fungicide with a different mode of
action.
2021 Vegetable Crop Handbook for Southeastern United States
255
Southeastern U.S. Vegetable Crop Handbook - 2021

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