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Peronospora

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Noun1.Peronospora - genus of destructive downy mildewsPeronospora - genus of destructive downy mildews  
fungus genus - includes lichen genera
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


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Another type of mildew that is common on rose bushes is the Peronospora sparsa fungus.
Dithane will protect against a range of downy mildews, including Peronospora species, rusts including Puccinia species and leaf spots (Septoria species).
Even more important," she adds, "it knocks out resistance to fungal pathogens," namely, several strains of the mildew-causing organism Peronospora parasitica.
 
 
 
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