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Insect spoils what would have been a good harvest of cherries in Switzerland

Despite full trees, this year’s Swiss cherry crop has been a mixed bag. The vinegar fly is to blame. The insect is the Drosophila Melanogaster. It comes when the cherries ripen, pierce the skin and lay eggs inside the fruit. The larva then starts eating the fruit from the inside, making it inedible.

Trees with tall stems are particularly affected. These usually carry cherries, which are used as brandy cherries. One of the biggest problems is that it is practically impossible to protect standard plants. The best protection against speckled-winged Drosophila is the tight-knit net. But these can hardly be combined without gaps on standard trees that grow up to 20 meters high.


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