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If it gets beyond the parasite, you should spray in winter with crude oil emulsion. If some scales are punctured or have a black spot on top, the comys fusca is busy and you probably will be safe enough without doing anything. Fumigating for Black Scale. I would like to know the best method of eradicating the black scale from my orange trees, whether by spraying or fumigation?
While this effect is very common, it produces no appreciable injury and needs no treatment for its control. Scale on Apricots. I would like to know how to check the scale on apricot trees. The most common scale on apricots, the brown apricot scale, is usually held in check by the comys fusca, which is as widely distributed as the scale itself.
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