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2022 Midwest Vegetable Guide

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Root Crops – Diseases Midwest Veg Guide 2022 259 Flint Extra (4.05) (trifloxystrobin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Rutabaga, Turnip | 2.0-2.9 oz. per acre. REI: 12-hour. PHI: 7-day. FRAC 11. Fontelis (1.67SC) (penthiopyrad) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 16-30 fl. oz. per acre. REI: 12-hour. PHI: 0-day. FRAC 07. iprodione products (iprodione) Carrot | 1-2 pts per acre. Formulations of iprodione include Nevado and Rovral. REI: 24-hour. PHI: 0-day. FRAC 02. Luna Sensation (fluopyram, trifloxystrobin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 4.0-7.6 fl. oz per acre. High rate only allowed on carrots. REI: 12-hour. PHI: 7-day. FRAC 07, FRAC 11. Luna Tranquility (SC) (fluopyram, pyrimethanil) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 8-11.2 fl. oz. per acre. REI: 12-hour. PHI: 7-day FRAC 07, FRAC 09. Merivon (fluxapyroxad, pyraclostrobin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 4.0-5.5 fl. oz. per acre. REI: 12-hour. PHI: 7-day. FRAC 07, FRAC 11. Omega 500F (4.17) (fluazinam) Carrot | 16 fl. oz. per acre. REI: 12-hour. PHI: 7-day. FRAC 29. Pristine 38WG (boscalid, pyraclostrobin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 8.0-10.5 oz. per acre. REI: 12-hour. PHI: 0-day. FRAC 07, FRAC 11. propiconazole products (propiconazole) Carrot | 4 fl. oz. per acre. PropiMax EC and Tilt are labeled. REI: 12-hour. PHI: 14-day. FRAC 03. Quadris Opti (SC) (azoxystrobin, chlorothalonil) Carrot | 2.4 pts. per acre. REI: 12-hour. PHI: 0-day. FRAC 11, FRAC M05. Quadris Top (SC) (azoxystrobin, difenoconazole) Carrot | 12-14 fl. oz. per acre. REI: 12-hour. PHI: 7-day. FRAC 11, FRAC 03. Quilt (SE) (azoxystrobin, propiconazole) Carrot | 14 oz. per acre. Late blight suppression only. REI: 12-hour. PHI: 14- day. FRAC 11, FRAC 03. Switch 62.5WG (cyprodinil, fludioxonil) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 11-14 oz. per acre. Do not exceed 2 applications to radish. REI: 12-hour. PHI: 7-day. FRAC 09, FRAC 12. Leaf Spot of Root Crops - Cercospora Fungus Scout fields to initiate a spray program when foliar blights are first detected (trace of disease). TOM-CAST with 15 disease severity values (DSVs) can help carrot farmers time their fungicide applications for control of foliar blights. See Disease Forecasting Systems for details. Cercospora leaf spot is sometimes known as early blight. Alternaria leaf blight is sometimes known as late blight. Non-Pesticide Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | Use disease-free seed. Hot water seed treatment may reduce this seedborne disease. Use temperatures and times of 122 F for 20 minutes for carrot, rutabaga and turnip, 122 F for 15 minutes for radish, or 118 F for 30 minutes for celeriac. Rotate to non-host crops for 2 years. Varieties with partial resistance are available. Prompt destruction of the finished crop with tillage to rapidly breakdown tissue is an important method to prevent disease build-up. Pesticide azoxystrobin products (azoxystrobin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | Rates vary widely depending on crop and application method. REI: 4-hour. PHI: 0-day. FRAC 11. Cabrio EG (20) (pyraclostrobin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 8-12 oz. per acre. REI: 12-hour. PHI: 0-day FRAC 11. chlorothalonil products (chlorothalonil) Carrot, Horseradish, Parsnip | Several formulations of chlorothalonil (Bravo, Echo, Equus) are labeled at various rates and crops. See label for directions. REI: 12-hour. PHI: 0-day for carrot; 10-day for parsnip; 14-day for horseradish. FRAC M05. copper products (copper hydroxide, copper octanoate, copper oxychloride, copper sulfate, copper diammonium diacetate complex, cuprous oxide) Beet, Carrot, Celeriac | Several formulations of copper (Badge, Champ, Kocide) products are labelled for use and may slow the spread of Cercospora. See label for directions. REI: 4 to 48-hour. PHI: 0-day. FRAC M01. OMRI-listed. Flint Extra (4.05) (trifloxystrobin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Rutabaga, Turnip | 2.0-2.9 oz. per acre. REI: 12-hour. PHI: 7-day. FRAC 11. Fontelis (1.67SC) (penthiopyrad) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 16-30 fl. oz. per acre. REI: 12-hour. PHI: 0-day. FRAC 07.

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