Vine mites

Vine mites

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Vine mites

Vine plants are commonly cultivated; the specimens of this genus, however, could be attacked by pathologies that, in some cases, also lead to the loss of the crop and in extreme cases to the death of the plants. The diseases that cause the most damage, usually, are the vine blight, powdery mildew or botrytis. In addition to these diseases, the plant could also be infested by insects and parasites, which feed on vital parts causing it to weaken. Widespread and difficult to treat pests could be vine mites. These arachnids are able to infest the plants and feeding on the plant's nutrients could cause serious damage to the production. The main types of mites that infest vines could be: Tetranychus urticae, Panonychus ulmi, Eotetranychus carpini-vitis, Calepitrimerus vitis and Calomerus vitis.

Calepitrimerus vitis

Calepitrimerus vitis are parasites that are able to produce a spring mite. In the presence of the pathology the buds could hatch late, subsequently producing buds not completely formed and with small leaves. In case the infestation is of an extended entity one could see a blockage of the vegetation, the lack of production of bunches, the formation of tendrils and with leaves that quickly darken and fall prematurely. If secondary gemstones develop, you would see a bushy appearance of the plant. One could intervene with specific acaricides, absolutely avoiding generic ones that would cause damage even to positive mites for the plant. It would also be possible to use oils to spray on the leaves in order to cause suffocation of the mites.

Colomerus vitis

Colomerus vitis is responsible for the erinosis of the vine. The symptoms of the infestation present 3 different aspects. The infestation could in fact block the sprouting or induce a vegetative delay with small clusters. A different infestation could produce a summer shortening of the apical leaves with a yellow-green coloration and subsequent premature desiccation and fall of the affected leaves. A last aspect of the infestation could present some reddish or green swellings on the upper page of the leaves, while on the lower one there would be a patina with a white-pink coloring that represents an ideal humid environment for the proliferation of the mites. In the event that the infestation of these parasites proceeds, one could witness the extension of the pathology also to the flowers and tendrils.

Red spider mite and yellow spider mite

The red spider mite is able to produce feeding bites that could produce drying of shoots, leaves, flowers and the total loss of pollen. The infestations of these most harmful pests are those that occur in the spring since they block the normal development of the shoots, going to significantly affect the future development of the plant. In summer, on the other hand, you could see damage to the leaves that would fade, causing a delay in fruit ripening and a lack of sugar in the berries. The yellow spider mite could cause discoloration on the leaves subsequently inducing a gray-green or gray-brown coloration with consequent reduction of the dimensions. In case of spring infestation the leaves could fall. The bunches could have an altered maturation and the berries would be lacking in sugars.