Midwest Vegetable Guide - 2022 - 181

Leafy Vegetables and Herbs (Non-Brassica) - Diseases
Endura (WG) (boscalid) Head Lettuce, Leaf Lettuce | 8-11
oz. per acre. Suppresses Bottom Rot. REI: 12-hour. PHI: 14day.
FRAC 07.
iprodione products (iprodione) Head Lettuce, Leaf Lettuce |
1.5-2 pts. per acre. Formulations of iprodione include Nevado
and Rovral. REI: 24-hour. PHI: 14-day. FRAC 02.
Luna Sensation (fluopyram, trifloxystrobin) Chicory,
Endive, Escarole, Head Lettuce, Leaf Lettuce, Radicchio | 7.6
fl. oz. per acre. Bottom rot and downy mildew suppression
only. Can be applied as a band over lettuce. REI: 12-hour.
PHI: 0-day. FRAC 07, FRAC 11.
Damping-Off Seed and Seedling Rots of
Multiple Crops - Multiple Pathogens
Non-Pesticide
Arugula, Basil, Chicory, Chive, Cilantro, Coriander, Cress,
Dill, Endive, Escarole, Fennel, Florence Fennel, Head
Lettuce, Lavender, Leaf Lettuce, Marjoram, Oregano,
Parsley, Radicchio, Rosemary, Sage, Savory, Spinach, Swiss
Chard, Tarragon, Thyme | 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
Orondis Gold (DC) (oxathiapiprolin, mefenoxam) Head
Lettuce, Leaf Lettuce | 13.9-27.8 fl. oz. per acre. Use as an atplant
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) Head Lettuce, Leaf
Lettuce | For damping-off of lettuce caused by Pythium and
Phytophthora only. REI: 12-hour. FRAC 28.
Downy Mildew of Lettuce - Bremia
Oomycete
Non-Pesticide
Chicory, Endive, Escarole, Head Lettuce, Leaf Lettuce,
Radicchio | Use disease-free seed and transplants. Hot water
seed treatment may reduce this seedborne disease. Use
temperatures and times of 118 F for 30 minutes for lettuce.
Rotate to non-host crops for 3 years. Varieties with partial
resistance are available. Use raised beds and adequate plant
spacing to improve drainage, air flow. Monitor humidity in
Luna Sensation (fluopyram, trifloxystrobin) Chicory,
Endive, Escarole, Head Lettuce, Leaf Lettuce, Radicchio | 7.6
fl. oz. per acre. Bottom rot and downy mildew suppression
only. Can be applied as a band over lettuce. REI: 12-hour.
PHI: 0-day. FRAC 07, FRAC 11.
mancozeb products (mancozeb) Head Lettuce, Leaf Lettuce
| Several formulations of mancozeb (Dithane, Manzate,
Penncozeb) are labeled at various rates. See label for
directions. REI: 24-hour. PHI: 10-day for head lettuce, 14day
for leaf lettuce. FRAC M03.
Merivon (fluxapyroxad, pyraclostrobin) Head Lettuce,
Leaf Lettuce | 6-11 fl. oz. per acre. Downy mildew
suppression only. REI: 12-hour. PHI: 1-day. FRAC 07,
FRAC 11.
Orondis Ultra Premix (SC) (oxathiapiprolin,
mandipropamid) Head Lettuce, Leaf Lettuce | 5.5-8.0 fl. oz.
per acre. REI: 4-hour. PHI: 1-day. FRAC 49, FRAC 40.
phosphite and phosphorous acid products (phosphorous
acid, potassium phosphite, mono-dipotassium salts of
phosphorous acid, mono- and dibasic sodium, potassium,
and ammonium phosphites, fosetyl-aluminum) Chicory,
Endive, Escarole, Head Lettuce, Leaf Lettuce, Radicchio |
Several phosphite or phosphorus acid products (Aliette,
Phostrol, ProPhyt, Rampart) are labeled at various rates.
Label includes different crops, PHIs, resistance instructions,
and other important information. Some manufacturers
recommend tank-mixing. These products may be used in a
preventative program until the disease is observed. Check
label carefully for presence of crop of interest, especially
herbs. REI: 4 to 12-hour. FRAC 33.
Presidio (4SC) (fluopicolide) Chicory, Endive, Escarole,
Head Lettuce, Leaf Lettuce, Radicchio | 3-4 fl. oz. per acre.
REI: 12-hour. PHI: 2-day. FRAC 43.
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181
the hoophouse and vent appropriately. Good weed control of
Aster weeds like dandelion, groundsel, and thistles is
important to limit other hosts near the crop.
Pesticide
Actigard (0.5WDG) (acibenzolar-s-methyl) Head Lettuce,
Leaf Lettuce | 0.75-1 oz. per acre. REI: 12-hour. PHI: 7-day.
FRAC P01.
azoxystrobin products (azoxystrobin) Head Lettuce, Leaf
Lettuce | 12-15.5 fl. oz. per acre. REI: 4-hour. PHI: 0-day.
FRAC 11.
Curzate 60DF (cymoxanil) Head Lettuce, Leaf Lettuce | 5.0
oz. per acre. Head lettuce 3.2-5.0 oz. per acre. leaf lettuce 5.0
oz. per acre. REI: 12-hour. PHI: 1-day. FRAC 27.
Midwest Vegetable Guide - 2022

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