downy mildew

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Related to downy mildew: powdery mildew, damping off

downy mildew

1. Any of various plant diseases caused by oomycetes and characterized by whitish gray patches of spores on the lower surfaces of leaves.

2. An oomycete causing such a disease.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

downy mildew

1. (Plant Pathology) a serious plant disease, characterized by yellowish patches on the undersurface of the leaves, caused by the parasitic fungi of the family Peronosporaceae, such as Peronospora destructor: affects onions, cauliflower, lettuce, etc

2. (Plant Pathology) any of the fungi causing this disease

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

down′y mil′dew

1. any common fungus of the family Peronosporaceae, appearing on damp vegetable or animal matter as a white fuzzy mass of spores.

2. a disease of plants caused by growth of downy mildew on the undersurface of the leaves, characterized by crumpling, yellowing, and death of the foliage.

[1885–90]

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Noun

downy mildew - any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons

false mildew

family Peronosporaceae, Peronosporaceae - parasitic fungi: downy mildews

blue mold fungus, Peronospora tabacina - fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves

onion mildew, Peronospora destructor - fungus causing a downy mildew on onions

Peronospora hyoscyami, tobacco mildew - fungus causing a downy mildew on growing tobacco

mildew - a fungus that produces a superficial (usually white) growth on organic matter

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Cucurbit downy mildew (Pseudoperonospora cubensis): Biology, ecology, epidemiology, host-pathogen interaction and control.

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Azoxystrobin helps in protecting crops against prevalent fungal diseases including Septoria leaf blotch, rye leafrust (Puccinia triticina), stripe rust, powdery mildew, wheat leaf rust (Puccinia recondita), and downy mildew. The specified concentration of azoxystrobin is 25-400 grams of active ingredient per hectare.

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Impatiens, or Busy Lizzies, have suffered from a major downy mildew problem, but breeders have been busy growing more robust varieties - the New Guinea impatiens have greater resistance to mildew and will perk up your pots with vibrant pinks and purples.

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Soybean [Glycine max (L.) Merill)] can be attacked by several diseases, among which downy mildew caused by Peronospora manshurica (Naumov) Syd.can cause 8 to 14% damage to U.S.

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Biological products company Marrone Bio Innovations (NasdaqGM:MBII) reported on Tuesday that it has submitted a new biological fungicide (MBI-110) to the US Environmental Protection Agency for a new solutions for downy mildew.

Marrone Bio Innovations submits MBI-110 to EPA for regulatory review for controlling downy mildews and white molds