Grape gall mites are a species of tiny mites that dwell inside cracks along stems and under buds during the winter and emerge during the beginning of vegetative growth. Grape gall mites feed on the underside of leaves and cause the formation of thick white hair-like bunches that turn red-brown as time progresses. The most noticeable symptom of an infestation is the creation of galls on the upper side of leaves. Grape gall mites rarely cause significant damage to the vines, although it may cause the overall appearance of plants to be less aesthetic.
Grape gall mites are a minor issue on vines when sulphur is sprayed regularly for powdery mildew.
Monitor: It is easier and more cost effective to overcome grape gall mites and successfully control infestations during the initial stage. Make it a routine to monitor the fields regularly and search plants for the above signs.
The following insecticides used in one or more parts of the world: paraffinic oil (ultra-fine) and fenpyroximate.
Sulfur-based products can be applied.
*Names marked in red are considered to be highly poisonous to beneficial insects.
*Names marked in green are considered to be organic and IPM (integrated pest management) compatible.