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The aim of research was to characterize the share of physical damage to the chitin plate and the position of fallen mites on hive boards after use of different varroacidal treatments. Bee colonies (Apis mellifera carnica) were not treated or treated with organic acids (formic, lactic and oxalic), Beevital Hive Clean (F&B GmbH, Austria) and Apiwarol AS (Biowet - Poland) - 10 colonies per treatment...
Oxalic acid 3.2% in water saccharose (1 : 1) solution was applied in 20 bee colonies (25 ml per colony) in October 2010 to control Varroa destructor infestation. The mite fall on the bottom board of the hive was scored after the second and seventh day of oxalic acid use. During the treatment with oxalic acid, the colonies included an average of 0.23 dm² (from 0 to 0.8 dm²) of sealed brood, which can...
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