NOTE: For the disease control products listed below, one product trade name and formulation is provided for each active ingredient (common name) as an example of rates, preharvest interval (PHI), restricted entry interval (REI), and special instructions. In many cases, there are other products available with the same active ingredient. Please see Table 25 and Fungicides and Bactericides Alphabetical Listing by Trade Name for more information on products with the same active ingredients.
The symbol OG indicates a product is listed by the Organic Materials Review Institute (OMRI) as approved for use in organic production. See Organic Certification section for more details.
Leaf Spots and Blights (Alternaria, Ascochyta, Cercospora, Powdery Mildew)
Select resistant cultivars where available. Use cultural practices that minimize periods of leaf wetness such as plant spacing, planting in the direction of prevailing winds, and avoiding overhead irrigation. Promptly incorporate plant debris after harvest to speed decomposition.
azoxystrobin (Quadris): 9.0 to 15.5 fl oz/A; PHI 0d, REI 4h, Group 11. Applications of Quadris to leafy vegetables may cause phytotoxicity; proceed with caution with regards to tank mixes and adjuvants. Rates vary depending on crop and disease: see label for details. Do not alternate with other Group 11 fungicides.
copper hydroxide (Kocide 3000): 0.75 to 2.0 lb/A. Beet ONLY; PHI 0d, REI 48h, Group M01. Do not apply in a spray solution having a pH less than 6.5 or tank mix with Aliette.
cyprodinil plus fludioxonil (Switch): 11.0 to 14.0 fl oz/A, PHI 7d (beet), 0d (chard) REI 12h, Groups 9 and 12.
fluopyram plus pyrimethanil (Luna Tranquility): 8.0 to 11.2 fl oz/A, PHI 7d, REI 12h, Groups 9 and 12.
fluxapyroxad plus pyraclostrobin (Merivon Xemium): 9.0 to 15.5 fl oz/A (beet), 4.0 to 11.0 fl oz/A (chard); PHI 7d (beet), 24h (chard), REI 12h. Groups 7 and 11. Use highest labeled rate for Cercospora.
penthiopyrad (Fontelis): 4.0 to 5.5 fl oz/A (beet), 14.0 to 24.0 fl oz/A (chard); PHI 7d (beet), 3d (chard), REI 12h, Group 7.
propiconazole (Tilt): 4.0 fl oz/A; PHI 14d, REI 12h, Group 3. Not labeled for powdery mildew on chard.
pydiflumetofen plus fludioxonil (Miravis Prime): 6.8 fl oz/A (beet), 9.2 to 13.4 fl oz/A (chard); PHI 7d, REI 12h, Groups 7 and 12.
pyraclostrobin (Cabrio EG): 8.0 to 12.0 oz/A (beet), 12.0 to 16.0 (chard); PHI 0d, REI 12h, Group 11. Do not alternate with other Group 11 fungicides.
Reynoutria sachalinensis extract (RegaliaOG): 1.0 to 4.0 qt/A ground application; PHI 0d, REI 4h, Group P5. Apply to ensure thorough coverage. See label for specific application instructions.
Swinglea glutinosa extract (EcoSwingOG): 1.5 to 2 pts/A; PHI 0d, REI 4h, Group BM 01. Labeled for Alternaria leaf spot and powdery mildew.
trifloxystrobin (Flint): 2.0 to 3.0 oz/A; PHI 7d, REI 12h, Group 11. Do not alternate with other Group 11 fungicides.
Downy Mildew (Peronospora farinosa f. sp. betae )
Plant resistant cultivars where available. Use cultural practices that minimize periods of leaf wetness such as plant spacing, planting in the direction of prevailing winds, and avoiding overhead irrigation. Promptly incorporate plant debris after harvest to speed decomposition.
ametoctradin plus dimethomorph (Zampro): 14.0 fl oz/A; PHI 0d, REI 12 h, Groups 45 and 40. Not labeled for beets.
azoxystrobin (Quadris): 12.0 to 15.5 fl oz/A; PHI 0d, REI 4h, Group 11. Do not alternate with other Group 11 fungicides. Not labeled for beets.
Bacillus amyloliquefaciens F727 (StargusOG): 2.0 to 4.0 qt/A; PHI 0d, REI 4h, Group 44. Apply preventatively in a minimum of 50.0 gallons of water/A.
fluopicolide (Presidio): 3.0 to 4.0 fl oz/A; PHI 2d, REI 12h, Group 43. Must be tank mixed with a fungicide with a different mode of action. Not labeled for downy mildew on beets.
oxathiapiprolin (Orondis Gold 200): 4.8 to 9.6 fl.oz/A; PHI 0d, REI 4h, Group 49. Begin foliar application prior to disease development. Not labeled for beets.
phosphorous acid (Fosphite): 1.0 to 3.0 qt/minimum 20.0 gal; PHI 0d, REI 4h, Group 33. Do not apply to plants that are heat or moisture stressed. Do not apply directly to copper treated plants within 20-day interval to avoid plant injury.
pyraclostrobin (Cabrio): 12.0 to 16.0 oz/A; PHI 0d, REI 12h, Group 11. Do not alternate with Quadris or Flint. Not labeled for beets.
Seed Decay
Plant on well-drained soil. Buy treated seeds. Do not use treated seed for food, feed or oil purposes.
fludioxonil (Maxim 4FS): 0.08 to 0.16 oz/100 lb seed; REI 12h, Group 12. For protection against seedborne and soil-borne fungi. Does not control Pythium and Phytophthora.
mefenoxam (Apron XL): 0.085 to 0.64 fl oz/100 lb seed; REI 48h, Group 4. For Pythium damping-off protection.
thiram (Thiram 42 S): 8.0 lb/100 lb seed; REI 24h, Group M 03.