Midwest Vegetable Guide - 2022 - 153

Fruiting Vegetables - Diseases
Damping-Off Seed and Seedling Rots of
Multiple Crops - Multiple Pathogens
Non-Pesticide
Eggplant, Pepper, Tomato | Practice good greenhouse
sanitation of equipment, tools propagation trays/pots, and
surfaces. Avoid excess moisture to the transplants in the
greenhouse by monitoring irrigation frequency. Plant in warm
field soils. The fungi responsible for damping-off in field
soils cause more loss when the seedling is slow to emerge.
Pesticide
Aliette WDG (80) (fosetyl-aluminum) Tomato | 2.5-5 lbs.
per acre. For Pythium spp., apply 2.5-5 lbs. per acre at 2-4
leaf stage for direct seeded plants or immediately after
transplanting. REI: 12-hour. PHI: 14-day. FRAC 33.
Apron XL (3) (mefenoxam) Eggplant, Pepper, Tomato | For
Pythium damping-off, 0.085 fl. oz. per 100 lb. of seed. REI:
48-hour. FRAC 04.
Orondis Gold (DC) (oxathiapiprolin, mefenoxam)
Eggplant, Pepper, Tomato | 28-55 fl. oz. per acre. Use as an
at-plant soil drench, banded spray in furrow, or through drip
irrigation. Do not follow soil applications of Orondis Gold
with foliar applications of Orondis Opti, or Orondis Ultra.
REI: 4-hour. PHI: 7-day. FRAC 49, FRAC 04.
Previcur Flex (6) (propamocarb) Eggplant, Pepper, Tomato
| For Pythium spp., apply 1.2 pts. (eggplants or peppers) or
1.5 pts. per acre (tomato) per acre with nozzles directed at
base of plants, or via drip irrigation, transplant water or
sprinklers. For late blight, 0.7-1.5 pts. per acre. REI: 12-hour.
PHI: 5-day. FRAC 28.
Ranman 400SC (34.5) (cyazofamid) Eggplant, Pepper,
Tomato | 2.1-2.75 fl. oz. per acre. For Buckeye rot and
Phytophthora blight, apply to base of plant or in transplant
water. Another formulation is Segway O. REI: 12-hour. PHI:
0-day. FRAC 21.
Regalia (5) (Reynoutria sachalinensis extract) Eggplant,
Pepper, Tomato | 1-4 qts. per acre. Use in a program with
copper products. For damping-off, | For Fusarium, Pythium,
Rhizoctonia spp., use 1-4 qts. per acre. On greenhouseproduced
seedlings, drench planting medium with 1-2 qts. per
gal. water or dip seedlings in solution of 1-2 qts. per 100 gal.
water immediately before transplanting. REI: 4-hour. PHI: 0day.
FRAC P05. OMRI-listed.
Ridomil Gold SL (4SC) (mefenoxam) Eggplant, Pepper,
Tomato | 1 pt. per acre. Soil treatment at 1 pt. per acre
broadcast (use less for band applications) before
transplanting. Subsequent directed sprays may be needed.
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153
Phytophthora crown rot only. Fungicides will not be effective
if plants are planted in poorly drained fields with a history of
the disease. Damping-off treatments for tomato are 1-2 pts.
per acre. Other formulations include MetaStar, Subdue
Maxx, Ultra Flourish, and Xyler. Rates vary by formulation.
REI: 48-hour. PHI: 7-day. FRAC 04.
Serifel (Bacillus amyloliquifaciens strain MBI-600)
Eggplant, Pepper, Tomato | 4-16 oz. per acre. Soil treatment
in-furrow, drench, shanked in and chemigation applications at
4-16 oz. per acre for Pythium spp. damping-off and other root
rots. REI: 4-hour. PHI: 0-day. FRAC 44. OMRI-listed.
SoilGard (12) (Gliocladium virens strain GL-21) Eggplant,
Pepper, Tomato | 0.5-2 lbs. per acre. Soil treatment in-furrow,
drench, shanked in and chemigation applications at 0.5-2 lbs.
per acre for Pythium, Rhizoctonia, Fusarium and other spp.
causing damping-off and root rots. For greenhouse-grown
transplants, drench medium with 2-4 oz. per gal. water. REI:
see label. PHI: 0-day. FRAC NC. OMRI-listed.
Early Blight of Fruiting Vegetables -
Alternaria Fungus
This pathogen can infect peppers and tomatoes, but is mainly
a problem in tomatoes. This disease initially causes lesions on
lower leaves of the tomato plant. After field planting, begin
protective fungicide applications on a 7-14 day schedule.
May be seedborne.
Group 11 Resistance: Strains of the fungus that causes early
blight that are resistant to group 11 fungicides have been
observed in Indiana and Ohio. Group 11 products labeled for
tomato and early blight include Cabrio and Quadris. Tankmix
group 11 fungicides with products that have a different
mode of action, or alternate group 11 fungicides with
fungicides that have a different group number.
Non-Pesticide
Eggplant, Pepper, Tomato | Use disease-free seed and
transplants. Hot water seed treatment may reduce this
seedborne disease. Use temperatures and times of 122 F for
25 minutes for tomato. Avoid fields with a history of
Fusarium and Verticillium wilts. Rotate to non-Solanaceous
crops for 3-4 years. Varieties with partial resistance are
available, and varieties resistant to Fusarium and Verticillium
wilt will hold up better against Alternaria. Use raised beds,
staking, and mulch to improve drainage, air flow, and reduce
splashing. Prompt destruction of the finished crop with tillage
to rapidly breakdown tissue is an important method to
prevent disease build-up.
Midwest Vegetable Guide - 2022

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