Final diagnosis


Acid rot

White grape berries take on a light brown tint under the action of acid rot.
Some berries are affected by <b> acid rot </b> on this cluster of white grape variety. They have a rather light brown color on this grape variety.
Symptoms begin on white grape berries. Wet rot spreads to the berries, the tissues collapse, discharge occurs. <b> Acid rot </b>.
Symptoms of acid rot spreading to the whole bunch on white grape berries.
Significant symptoms of acid rot on white grape berries.
Details of berries emptied of their substance under the action of acid rot
The berry colonized by acid rot eventually tears and detaches from the stalk.
An outbreak of <b> acid rot </b> settling in on a cluster of white grape variety.
Rotten berries and Drosophila: beware of <b> acid rot </b>!
Whitish mucous clumps are visible on the surface of this grape. They result from the development of yeast colonies. <b> Acid rot </b>.
One of the berries affected by <b> acid rot </b>, with the dried-out skin, retained its shape.
Symptoms of rot on black grape berries. <b> Acid rot </b>.
On black grape varieties, the berries contaminated by <b> acid rot </b> take on a reddish color.
Damage from <b> acid rot </b> on berries of red grapes.
Black grape berries more or less affected by <b> acid rot </b>. The skin of one of the berries has split open.
Black grape berry starting to shrivel from <b> acid rot </b>. On the bay on the right, the trace of a flow of juice can be observed.
Bunch completely affected by <b> acid rot </b>. Many berries have liquefied, torn and detached from the stalk.
Rots complex on white grape clusters: acid rot (bottom), gray rot (almost everywhere), and <i> Penicillium </i> rot (bluish spore pads).
The presence of numerous <b> fruit flies </b> in the vines characterizes the manifestation of <b> acid rot </b>.
In the presence of symptoms of <b> acid rot </b>, fruit flies are never far away! They are vectors of the pathogens in question which they disperse over long distances.
A fruit fly attracted to a berry affected by <b> acid rot </b>.
Pourriture acide 44
Different microorganisms involved in <b> <i> acid rot </i> </b> are found on the body of Drosophila, for example: a) <i> <b> Kloeckera apiculata </b> </i> in epicuticular setae; b) <b> <i> Gluconobater </i> sp. </b> in hair on the abdomen; c) <b> <i> Pichia membranifaciens </i> </b> on the legs ... These insects ensure their vection.