Efficiency of repeated treatments using oxalic acid with trickling and spraying methods to control varroa mits under broodright condition of honey bee colonies [electronic resource].

Includes reference.

This study was carried out in apiary at Assiut region during November,2007. The efficiency of repeated treatments using oxalic acid (3.2%concentration) with trickling and spraying methods to control varroa mites under brood decrease condition in honey bee colonies was studied. After 24 hours of oxalic acid applications by trickling and spraying, the dead fallen mites were significantly higher in both methods (445.4 and 607.4 mites/colony, respectively) than control (21.2 mites/colony), resulting 20.0 and 27.7 efficiency index, whereas after 48 and 72 hours the results were similar to 24 hours but the levels of fallen mites were low. The first application of oxalic acid by the two tested methods produced significantly more fallen mites (653.0 and 743.2 mites/colony, respectively), inducing 10.8 and 12.4 efficiency index.

Summary in Arabic.

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