Midwest Vegetable Guide - 2022 - 237

Potato - Diseases
mancozeb products (mancozeb) | Several formulations of
mancozeb (Dithane, Manzate, Penncozeb) are labeled at
various rates. See label for directions. REI: 24-hour. PHI: 14day.
FRAC M03.
Omega 500F (4.17) (fluazinam) | 5.5 fl. oz. per acre. REI:
12-hour. PHI: 14-day. FRAC 29.
Orondis Opti Premix (SC) (oxathiapiprolin,
chlorothalonil) | 1.75-2.5 pts. per acre. REI: 12-hour. PHI: 7day.
FRAC 49, FRAC M05.
Orondis Ultra Premix (SC) (oxathiapiprolin,
mandipropamid) | 5.5-8 fl. oz. per acre. REI: 4-hour. PHI:
14-day. FRAC 49, FRAC 40.
Previcur Flex (6) (propamocarb) | 0.7-1.2 pts. per acre.
REI: 12-hour. PHI: 14-day. FRAC 28.
Ranman 400SC (34.5) (cyazofamid) | 1.4-2.75 fl. oz. per
acre. REI: 12-hour. PHI: 7-day. FRAC 21.
Revus Top (SC) (mandipropamid, difenoconazole) | 5.57.0
fl. oz. per acre. REI: 12-hour. PHI: 14-day. FRAC 40,
FRAC 03.
Tanos (DF) (famoxadone, cymoxanil) | 6-8 oz. per acre.
Black dot Disease suppression only. REI: 12-hour. PHI: 14day.
FRAC 11, FRAC 27.
Zampro (SC) (ametoctradin, dimethomorph) | 11-14 fl. oz.
per acre. REI: 12-hour. PHI: 4-day. FRAC 45, FRAC 40.
Zing! (zoxamide, chlorothalonil) | 30-34 fl. oz. per acre.
REI: 12-hour. PHI: 7-day. FRAC 22, FRAC M05.
Nematodes
Potato cyst nematodes are serious pathogens that reduce
stands, yield and tuber quality. As sedentary endoparasites,
the female body hardens into a cyst that protects its eggs for a
decade or so in absence of a host.
Root lesion nematodes form a destructive disease complex
with Verticillium, called Potato Early-Die. Both root lesion
nematodes and Verticillium can be supported by multiple
crops, which makes it difficult to control through rotation.
Non-Pesticide
Collect soil samples for nematodes in the fall and avoid fields
with high numbers. Rotate to a non-broadleaf crop, such as
grass grains or sweet corn for >3 years. Prompt destruction of
the finished crop with tillage to rapidly breakdown tissue and
displace nematodes is an important method to prevent
nematode build-up. Anaerobic soil disinfestation (ASD) is an
VAPAM HL (4.25L) (metam sodium) | 37.5-75 gals. per
acre for VAPAM HL, or 30-75 gals. per acre of Sectagon
K42. Use high rates on muck, and lower rates on sands. In the
fall, when soil at 6 inches is above 50 F and moist, place
VAPAM HL or Sectagon K42 about 8 inches beneath the
surface through shank-injectors, or broadcast sprayers
directly in front of tillage tools to bury it. Seal with soil
packing or irrigation. Or, in the spring, it can be applied
Midwest Veg Guide 2022
237
effective sterilization method for greenhouse and high tunnel
soils that contain nematodes.
Pesticide
K-PAM HL (5.8L) (metam potassium) | 30-60 gals. per
acre for K-PAM HL or 30-63.9 gals. per acre for Sectagon
K54. Use high rates on muck and lower rates on sands. In the
fall, when soil at 6 inches are above 50 F and moist, place KPAM
HL or Sectagon K54 about 8 inches beneath the surface
through shank-injectors, or broadcast sprayers directly in
front of tillage tools to bury it. Seal with soil packing or
irrigation. Or, in the spring, it can be applied through drip
irrigation under unperforated plastic beds. Before planting,
allow product to dissipate for 1 week for every 10 gals. per
acre plus 1 more week. REI: 5-day. IRAC 08F, FRAC M03,
HRAC NC. RUP.
Nimitz (4EC) (fluensulfone) | 3.5-7.0 pts. per acre. May be
broadcast, banded, or drip-applied in the spring up to 7 days
before planting at a depth of 8 inches. Effectiveness is
reduced on muck and clay soils REI: 12-hour. IRAC UN.
Telone C-17 (L) (1,3-dichloropropene, chloropicrin) |
Muck soils: 30 gals. per acre for C-17 formulation and 36
gals. per acre for C-35 formulation. Mineral soils: 18-27.5
gals. per acre for C-17 formulation and 21.4-33 gals. per acre
for C-35 formulation. In the fall, when soil temperatures at 6
inches are above 50 F and soil is moist, place product about 8
inches beneath the surface through shank-injectors, or
broadcast sprayers directly in front of tillage tools to bury it.
Seal with soil packing, irrigation, or plastic. Or, in the spring,
InLine may be applied through drip irrigation under
unperforated plastic beds at 13-20.5 gals. per acre (on mineral
soils only). Before planting, allow product to dissipate for 1
week for every 10 gals. per acre plus 1 more week. REI: 3-5day.
IRAC UN, FRAC NC, IRAC 08B. RUP.
Telone II (9.85L) (1,3-dichloropropene) | Muck soils: Use
at 25 gals. per acre. Mineral soils: Use at 9-12 gals. per acre.
In the fall, when soil at 6 inches is above 50 F and moist,
place Telone II about 8 inches beneath the surface through
shank-injectors, or broadcast sprayers directly in front of
tillage tools to bury it. Seal with soil packing or irrigation. Or,
in the spring, Telone EC may be applied through drip
irrigation under unperforated plastic beds at 9-18 gals. per
acre on mineral soils only. Before planting, allow product to
dissipate for 1 week for every 10 gals. per acre plus 1 more
week. REI: 5-day. IRAC UN, FRAC NC. RUP.
Midwest Vegetable Guide - 2022

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