TABLE 3-15. DISEASE CONTROL PRODUCTS FOR GARLIC (cont'd) E. Pfeufer, Plant Pathologist, University of Kentucky (Not updated in 2020) Disease Downy mildew (Peronospora destructor) Material acibenzolar-S-methyl (Actigard 50 WG) ametoctradin + dimethomorph (Zampro) cyazofamid (Ranman) dimethomorph (Forum 50 WP) fluopicolide (Presidio) mandipropamid (Revus) mandipropamid + oxathiapiprolin (Orondis Ultra) mefenoxam + mancozeb (Ridomil Gold MZ) White rot (Sclerotium cupartum) azoxystrobin (various) azoxystrobin + chlorothalonil (Quadris Opti) boscalid (Endura) dicloran (Botran) fludioxonil (Cannonball) iprodione (Rovral 50 WP) PCNB (Blocker 4F) thiophanate-methyl (various) 1 43.6 oz/acre - 3 Spray directly into open furrow at planting. 4+M 11 11+M 7 14 12 2 14 2.5 lb/acre See labels 1.6 to 3.2 pt/acre 6.8 oz/acre 2 to 3.2 qt/acre 0.5 oz/1000 row ft 4 lb/acre 29 oz/1000 row ft 7 7 7 14 7 - - 2 4 hr 0.5 0.5 0.5 0.5 1 0.5 Use with a suitable adjuvant. Do not make more than two sequential applications. Make no more than one application before alternating with a fungicide with a different mode of action. Apply at planting in a 4- to 6-inch banded spray. Under high disease pressure, apply as a foliar spray. Also Botrytis diseases. In-furrow application only. Spray cloves as they are being covered by soil (38 to 40 in. bed spacing). One application per year. In-furrow, at-planting treatment only. FRAC Code P01 45+40 21 40 43 40 40+49 Rate of Material Formulation 0.75 to 1 oz/acre 14.0 fl oz/acre 2.75 to 3 oz/acre 6.4 oz/acre 3 to 4 oz/acre 8.0 fl oz/acre 5.5 to 8 oz/acre Minimum Days Harv. 7 2 7 7 0.5 0.5 0.5 4 hr Must be applied as a tank mix with another fungicide active against downy mildew; apply every 7 to10 days. Do not make more than two sequential applications. Tank-mix with a nonionic surfactant and apply on preventative schedule. Apply as a tank mix with another fungicide active against downy mildew. Apply with a silicone-based adjuvant. 7 to 10 day schedule. Do not combine with other products containing oxathiapiprolin (any Orondis product). Reentry 0.5 12 hr Method, Schedule, and Remarks Downy mildew, iris yellow spot virus, and bacterial leaf streak. Apply preventatively; avoid usage during periods of plant stress. Tank-mix with a broad-spectrum fungicide like chlorothalonil or mancozeb. 226 2021 Vegetable Crop Handbook for Southeastern United States DISEASE CONTROL