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green rot

muffa verde (I)
pourriture verte (F)
green mould (GB)

A form of bunch rot by the mold the subgenus Penicillium expansum is caused. This is particularly promoted by a humid weather. He prefers ripe berries that are already through Botrytis a seed break through the real mildew have or through Schad birds Wasp or mechanical damage (eg hail) were injured. The ripe berries turn greenish gray and get a (first white, later blue-green) pustular spore plant. Even at the slightest air movement, clouds of spores rise. Due to the intense unpleasant taste cause even the smallest amounts of the Schimmel taste, Therefore, the affected berries must be eliminated. Very similar in cause and effect is the so-called pink pillar, in which the fungus is whitish to pink in color. This is caused by the mold Trichothecium roseum caused. Both fungi are difficult to control, as they only appear as secondary during maturity. Together with the green rot often occurs the acid rot on. By-rotten grapes in the wine got off flavors activated carbon fought. See also below Vine enemies,

Green rot - Penicillium expansum on grape / spores on pear

Picture left: By Bauer Karl - Own work, CC BY 3.0 at , Link
Picture right: By HJ Larsen, - insectimages , CC BY 3.0 , Link

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