. Manual of fruit insects. s not often a serious pest inberry plantations and is usually readily New Jersey, anddoubtless also in moresouthern localities, therose scale may hiber-nate in all stages fromthe egg to the gravidfemales, mostly, how-ever, as young scalesof both sexes, as malepupae and as full-grownfemales. Observationsin Canada also indi-cate similar hiberna-tion conditions and atleast two generationsannually. Breeding isalmost continuous after April, and three or more broods mayoccur in New Jersey and southward. Two little hymenopterous parasites, Aphelinus diaspidisa
. Manual of fruit insects. s not often a serious pest inberry plantations and is usually readily New Jersey, anddoubtless also in moresouthern localities, therose scale may hiber-nate in all stages fromthe egg to the gravidfemales, mostly, how-ever, as young scalesof both sexes, as malepupae and as full-grownfemales. Observationsin Canada also indi-cate similar hiberna-tion conditions and atleast two generationsannually. Breeding isalmost continuous after April, and three or more broods mayoccur in New Jersey and southward. Two little hymenopterous parasites, Aphelinus diaspidisand Arrhenophagus chionaspidis, destroy many of the measures. In berry plantations cut and burn all badly infested canessoon after the fruit is off, or in winter, and thus prevent seriousinfestation of the new canes. Thorough applications of a soapspray (1 pound whale-oil or other good soap in 1 gallon water)or the lime-sulfur spray in winter or early spring have beenfound to effectively control this
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
