Wednesday, October 7, 2015

Spot Anthracnose Disease in grapevines leaves Mildew

Spot Anthracnose Disease in grapevines leaves Mildew

The main vine diseases are:

• Anthracnose:
It is caused by the fungus Elsinoe ampelina (Sphaceloma ampelinum). Find good conditions for development humidities
high and relatively low temperatures. It is also known as smallpox, coal and negrão. When it attacks the leaves
causes dark spots that tend to turn into holes due to lower tissue obituary. The branches causes
brown spots that eventually lengthen and deepen forming so-called cancers. Berries generates circular lesions.

• Spot the leaves:
Its cause is the fungus Isariopsis clavispora. Occurs at the end of the season. Causes early leaf drop and
sprouting early. It is characterized by the presence of dark brown necrotic spots.

• Mildew:
It is caused by the fungus Plasmopara viticola. In leaves determines the appearance of yellow stains that resemble
oil stains. With the evolution of the disease, occurs at the bottom, opposite the yellow spot, forming a material ae
white. Also causes dry and falling of flowers. And in the case of attacking the berries further causes color change,
maturity and decline.


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