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Date: | Sat, 10 Feb 2024 11:48:52 -0500 |
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In my previous post I cited Baker (1942). The reference is to:
Wintering of bees as affected by location of hive entrance, N. BAKER. (Iowa Expt. Sta.). (Iowa Stute Hort. Soc. [Rpt.], 77 (1942), pp. 254-268, illus. 1).—In the study reported, winter mortality among honeybee colonies in hives wrapped in slaters' felt was much lower where middle entrances were provided than with bottom entrances alone, apparently because of more favorable stimuli and better opportunities for flight. Colony strength, as measured by brood area in April, was also significantly greater after wintering with the added middle entrance. The degree of "upward ventilation" afforded by having an entrance below as well as above the lower hive body gave no significant difference in brood area as compared with the middle entrance alone, but did give a somewhat greater variation in the results among the colonies where it was provided.
PLB
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