Final diagnosis


Phytoplasma of flavescence dorée

Red grape vine affected by (<b> flavescence dorée </b>).
Appearance of a red grape branch showing symptoms of <b> flavescence dorée </b>. The length of the branch is reduced and the leaves are yellowing, even reddening, and more or less curled.
Red grape branch showing yellowing, reddening leaves, more or less rolled up. (<b> flavescence dorée </b>)
Sectoral reddening on the surface of a red grape vine leaf. (<b> flavescence dorée </b>)
Appearance of sectorial reddening under the blade of a red grape leaf. (<b> flavescence dorée </b>)
The <b> Flavescence dorée </b> rather makes the leaves of this red grape reddish
On these two black grape vines on the left and white on the right, only part of the foliage shows symptoms of <b> flavescence dorée </b>
On a white variety, the leaves turn yellow and curl when the vine is affected by <b> flavescence dorée </b>
Absence of ripening of a vine branch which keeps its green color. (<b> flavescence dorée </b>)
Partial ripening of a vine branch. (<b> flavescence dorée </b>)
Sectoral ripening of a vine branch. (<b> flavescence dorée </b>)
On this red grape vine we can see vine twigs with or without August. (<b> flavescence dorée </b>)
The berries gradually wilt and shrivel on certain grape carried by vines affected by <b> flavescence dorée </b>
On one of the red grape clusters, the berries gradually wilt and shrivel. the bunch in the background is completely dried out. (<b> flavescence dorée </b>)
A few wilting berries will soon dry out entirely. (<b> flavescence dorée </b>)
All the berries in this cluster are withered. (<b> flavescence dorée </b>)