[:de]Die Oberseite mit Blattpocken.


Blattgallmilbe

Die Rebenpockenmilben, Eriophyes vitis, sind 0,15 mm große Tiere.

Sie gehören zu den Gallmilben.

Sie überwintern unter den äußeren Knospenschuppen.

Im Wollstadium dringen die Milben in die Knospen ein und beginnen zu saugen.

 

Blattgallmilbe Blattunterseite

 

Das Blatt reagiert auf den injezierten Speichel mit der Bildung eines starken Haarfilzes in den Pockenausstülpungen, Filzgallen, in der Umgebung der Einstichstelle auf der Unterseite des Blattes.

Die Blattgallmilbe tritt die besonders an Riesling auf.

 [:en]Rust mite.

Leaf blister mite.

Grapevine bud mite which attacks the buds and the erinose (blister) mite which attacks the leaves belong to the same species, i.e. Eriophyes vitis (Pagenstecher).

Grapevine bud mite range in length from 0.1 mm to 0.2 mm and are approximately 0.03 mm in diameter.

Their colour is creamy white and they have two pairs of feet near the head.

Erinose mites overwinter in the buds and migrate to the leaves during spring. At the end of summer, after having multiplied, they return to the buds to over- winter.

The erinose mites feed on the ventral side of the leaf and cause distinct galls on the dorsal surface, which inhibit the normal physiological functions of the leaves.

In the case of the bud mite, the mites do not migrate to the leaves, but penetrate the buds of the new shoots where they feed, multiply and overwinter.

The bud mite causes smaller and deformed leaves at the base of the shoot, smaller and deformed shoots as well as stunted and deformed bunches.

Recent biological studies have shown that the majority of mites are present outside the bud during and shortly after budding.

 

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