Spinnmilben occur world-wide. Some Spinnmilben are serious parasits, as for instance the red spider (Metatetranychus/Panonychus ulmi), the common Spinnmilbe (Tetranychus urticae) or the lime tree spin mite (Eotetranychus tiliarum).

Schadbild

The aggressive parasits spread within a short time in great quantities and cover usually the blade lower surfaces with a fine Gespinst. They exhaust the sheet cells, so that from above a lightsilvery, translucent point sample develops, until the sheets finally wither. Dry air and high temperatures promote the propagation of these parasits, which endanger above all cucumbers and beans.

Vorbeugung and fight

High air humidity and good aeration are in the greenhouse a good preventive measure. Already with small infestation one should use robbery mites. In the garden can be provided by Mulchen for even humidity, and on hot days must be thoroughly poured. Natural opponents of the mites are assassin bugs, slip wasps, Florfliegen and ladybird-susceptible plants can one by Brennesseljauche or powdered mineral strengthen. (See also plant liquid manure) one squirts already stricken vegetables several times with

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Articles in category "Spinnmilben"

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