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The effects of infestation level of Varroa jacobsoni on wintering of honeybee (Apis mellifera L.) colonies


, : The effects of infestation level of Varroa jacobsoni on wintering of honeybee (Apis mellifera L.) colonies. Apiacta 27(2): 33-38

A total of 60 colonies, each with 9 frames of bees, were treated in autumn with Folbex-VA (bromopropylate) and overwintered indoors; group A (20 colonies) was treated once, group D (40 colonies) 4 times at 4-day intervals. In group A, V. jacobsoni infestations were reduced by 55.8 +or- 2.9%, in group D, by 87.9 +or- 1.7%. After wintering, A colonies contained 5.12 +or- 1.15 frames of bees, D colonies 6.79 +or- 1.07 frames of bees.

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