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Related to mildew: Black mold


name for certain fungi and protists, for the diseases they cause in various crops, and for the discoloration (and sometimes the weakening and disintegration) they cause in such materials as leather, fabrics, and paper. The powdery mildews usually grow on the surface of plant tissues, forming a gray or white coating and absorbing nourishment from the host. Although traditionally considered fungi, the downy mildews are now more often considered protists. They attack grapes, cucumbers, potatoes, and other vegetables. Methods of making fabrics and leather resistant to mildew have been devised. For the occurrence and control of mildews in agriculture, see diseases of plantsdiseases of plants.
Most plant diseases are caused by fungi, bacteria, and viruses. Although the term disease is usually used only for the destruction of live plants, the action of dry rot and the rotting of harvested crops in storage or transport is similar to the rots
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. Powdery mildews are classified in the kingdom FungiFungi
, kingdom of heterotrophic single-celled, multinucleated, or multicellular organisms, including yeasts, molds, and mushrooms. The organisms live as parasites, symbionts, or saprobes (see saprophyte).
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, phylum (division) Ascomycota; downy mildews are classified in the kingdom ProtistaProtista
or Protoctista
, in the five-kingdom system of classification, a kingdom comprising a variety of unicellular and some simple multinuclear and multicellular eukaryotic organisms.
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, phylum (division) Oomycota.



the infection of plants with diseases similar to downy mildew, which is caused by fungi of the order Peronosporales. In Soviet literature the term “mildew” is conventionally used to designate only downy mildew of grapes.


A whitish growth on plants, organic matter, and other materials caused by a parasitic fungus.
Any fungus producing such growth.


A fungus that grows and feeds on paint, cotton and linen fabric, etc., which are exposed to moisture; causes discoloration and decomposition of the surface.
References in periodicals archive ?
One potential connection Brandl and Simko are following is that downy mildew resistance in lettuce line RH08-0464 may also effect greater expression of the antimicrobial protein PR-1.
Pleased with Mildew's contribution to Rascal's success, management at Rascal decided to acquire Mildew in 1977.
And Roof-A-Cide and Hixon Roof Renew offer a warranty: If the mold, mildew, fungus or algae come back within two years of the treatment, Hixon will retreat the roof for free.
South American research showed four years ago that milk could help in the fight against mildew disease on squash plants, and milk is used to treat the disease by some organic gardeners as well as by grape vine growers in Australia.
An early- to mid-season variety available in early September, Liberty is resistant to the "big four" diseases: apple scab, cedar apple rust, fire blight, and powdery mildew.
Milk and other dairy products can be as effective as some conventional fungicides in controlling powdery mildew in vineyards, according to a researcher from the University of Adelaide, Australia.
They're fairly resistant to mildew and have held up in our coastal garden for five years with only moderate water," he says.
A MINT is subject to rust, mildew and other fungal diseases, which are often encouraged by over-crowding.
MILDEW will be a major problem in the garden this year.
Black rot control is the same as that for mildew (see spray recipe below).
Bond provides 868 recipes for everything from planting mint and keeping mice away to mixing tea tree oil with water to combat carpet mildew.
The new fungicide is highly effective for control of powdery mildew in wine, table and raisin grapes.