Rich arrangement with around 17,000 species of tiny arachnids (arachnida) with a cylindrical, spherical or disc-shaped body in many colors with three or mostly four pairs of legs (including ticks). In contrast to the other arachnids, which mostly live predatory, mites are mostly herbivores or live parasitically on plants or animals. Often there are also useful insects in the bottoming play an important role in eating animal or vegetable residues. A distinction is made between the two groups of gall mites (tetrapodili, tiny about 0.15 mm) and spider mites (Tetranychidae, up to about 0.5 mm).
The most important pests on the vine include the four types of leaf gall mite or smallpox mite (Eriophyes vitis), curling mite (Calepitrimerus vitis), red spider or fruit tree spider mite (Panonychus ulmi) and common spider mite or bean spider mite (Tetranychus urticae). Combat is also carried out with insecticides, The gall mites are particularly sensitive to sulfur, The mites have numerous natural predators such as gall midges (certain types), lacewings. ladybug and predatory mites,
The smallpox mite is common worldwide. The adult animals hibernate under the bud scales. They become active in the spring and are caused by piercing Filzkrankheit,
The negative effects of the tiny ripple mite , not even visible under the magnifying glass, were first described by Hermann Müller-Thurgau (1850-1927) 1903 recognized. In the spring, the pest will open eyes affected. The boy's tapping leaves does not lead to galls as in the case of leaf gall mites, but leads to frizz, weak expulsion, Short knots and broom growth.
The red spider (spider mite) first appeared in large quantities in the 1950s. The hibernation takes place as an intensely brick-red colored egg near the winter buds and on the old wood in such an amount that these areas are colored red. The larvae hatch towards the end of leaf formation and develop into sex animals. The females have long bristles on their backs that protrude from white spots. They lay the eggs on the leaves, there are up to six generations every year. The pierced leaves arch upwards like a spoon, remain small or fall off and the results are short shoots and Verrieseln,
The common spider mite (bean spider mite) occurs in over a hundred plants. It hibernates as a 0.5 millimeter tall, mated female under the bark on the trunk or in fallen leaves on the ground. Very early in the spring, it migrates to host plants next to the vineyards. The insects only migrate to the vine leaves at the end of May at the earliest. There they develop a strong spinning activity, which is noticeable in the upper area of the shoots and leaf tips by spinning threads. In the event of heavy infestation, the leaves dry up and fall off. It will also be the grapes affected. The insects can be recognized on the green leaves by the pair of dark spots on the yellow-green abdomen (which is why they are also called spotted mite). There can be up to eight generations of the pest in a year. See also under beneficials and Vine enemies,