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2022 Midwest Vegetable Guide

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Leafy Vegetables and Herbs (Non-Brassica) – Diseases Midwest Veg Guide 2022 181 Endura (WG) (boscalid) Head Lettuce, Leaf Lettuce | 8-11 oz. per acre. Suppresses Bottom Rot. REI: 12-hour. PHI: 14- day. 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 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) 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 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. 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, 14- day 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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