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Peronosporaceae

Phytophthora inf...
uizui
© Downtowngal
Plasmopara vitic...
uizui
© Cvenkel Miran
Peronospora pulv...
uizui
© Cvenkel Miran
Phytophthora alni
uizui
© Malte
Phytophthora porri
uizui
© Rasbak
Hyaloperonospora...
uizui
© Howard F. Schwartz, Col...
Bremia lactucae
uizui
© Rasbak
Phytophthora ram...
uizui
© Joseph O'Brien, USDA Fo...
Plasmopara nivea
uizui
© Cvenkel Miran
Phytophthora cap...
uizui
© Elizabeth Bush, Virgini...
Pseudoperonospor...
uizui
© Christian Hummert
Phytophthora cap...
uizui
© OllieMartin
Peronospora hyos...
uizui
© R.J. Reynolds Tobacco C...
Peronospora mans...
uizui
© Clemson University - US...
Peronospora dest...
uizui
© Howard F. Schwartz, Col...
Phytophthora ery...
uizui
© Cvenkel Miran
Hyaloperonospora...
uizui
© Michal Maňas
Plasmopara vitic...
uizui
© Clemson University - US...
Phytophthora inf...
uizui
© USDA
Phytophthora inf...
uizui
© Rasbak
Phytophthora inf...
uizui
© Rasbak
Phytophthora inf...
uizui
© Rasbak
Phytophthora inf...
uizui
© Maksim
Komentarji Samo za taxonomsko enoto: Peronosporaceae:
7575 en 04.01.2020   17:52:42   miran       
downy mildews = Peronosporaceae


Initial symptoms include large, angular or blocky, yellow areas visible on the upper surface. As lesions mature, they expand rapidly and turn brown. The under surface of infected leaves appears watersoaked. Upon closer inspection, a purple-brown mold becomes apparent. Small spores shaped like footballs can be observed among the mold with a 10x hand lens. In disease-favorable conditions (cool nights with long dew periods), downy mildew will spread rapidly, destroying leaf tissue without affecting stems or petioles.

Downy and Powdery mildew on grape leaf.JPG


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