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Petri's disease

Petri disease (GB)

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 US Ampelographer Lucie Morton Garrett. On a larger scale, it was in the 1950s in South Africa observed. At the beginning of the 1980s she entered newly-planted vineyards California on. In the late 1990s, there were also in Australia. New Zealand and some countries of Europe an infestation.

It is also referred to as Black Goo Disease , Black Xylem Decline (BXD) and Young Vine Decline (YVD) (decline = decline, decline). Specifically, the disease term Black Goo Disease (or decline) aptly describes the typical disease symptoms manifested by black spots and dark, viscous, droplet-like mucous effusions (rubbers) at the intersections of sawn-off strains of diseased grapevines.

Cause are the two mushrooms Phaeomoniella and Phaeoacremonium. The mushrooms penetrate into the xylem of the trunk, a part of the leading tissue and prevent the supply of nutrients and water. The vine dies after some time. In combination with other types of mushrooms and increasing vine age it seems the disease Esca to develop. Therefore, it is also referred to as their precursor disease or "Young Esca". The disease is spread by infected vine material, such as one finishing, It is successfully combated by hot water. The symptoms are quite similar Blackfoot disease, See also a complete listing of all pests and diseases below Vine enemies,

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