YVD

Abbreviation for the vine disease "Young Vine Decline"; see under Petri .

The dangerous vine disease is named after the Italian plant pathologist Lionello Petri (1875-1946), who first described it in 1912. The name was coined by the US traffic light photographer Lucie Morton Garrett. It was observed on a larger scale in South Africa from the 1950s onwards. It is also known as Black goo disease, Black Xylem Decline (BXD) and Young Vine Decline (YVD). Especially the disease name black goo disease (or decline) aptly describes the typical disease symptoms, which are manifested by black spots and dark, viscous, droplet-shaped...

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YVD

Petri's disease

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YVD

Petri's disease

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