单词	downy mildew
释义	downy mildew noun 1 : any of various parasitic lower fungi (family Peronosporaceae) that produce whitish masses of sporangiophores or conidiophores on the undersurface of the leaves of the host 2 : a plant disease caused by a downy mildew Example Sentences Recent Examples on the Web Fungicides can be used when the first spots of downy mildew are noted. Tom Maccubbin, Orlando Sentinel, 3 Sep. 2022 Botrytis spores can start on the blooms, and black spot and downy mildew spores can start on the leaves and move on to invade the canes. Nan Sterman, San Diego Union-Tribune, 7 Aug. 2021 Basil downy mildew flourishes in warm, humid environments. Tim Johnson, chicagotribune.com, 26 Aug. 2019 Basil downy mildew affects homeowners with a few basil plants, as well as large-scale commercial growers. Tim Johnson, chicagotribune.com, 26 Aug. 2019 The problem with your basil plants is most likely a disease called downy mildew. Tim Johnson, chicagotribune.com, 26 Aug. 2019 Hops are unhappy in Washington, suffering from the heat, downy mildew and Japanese beetles, to name a few issues. Washington Post, 9 July 2019 Repeat applications of natural horticultural oils or soaps can normally control the mites and thrips but preventing downy mildew is going to take a fungicide. Tom Maccubbin, OrlandoSentinel.com, 23 Dec. 2017 But the problem of downy mildew, which damaged the leaves and vines of the plant, wasn’t such a simple solve. Kat Eschner, Smithsonian, 13 Dec. 2017 See More Word History First Known Use 1886, in the meaning defined at sense 1
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