STUDIES ON THE CONTROL OF PARASITIC HONEY-BEE MITE VARROA-JACOBSONI OUD

Comparative study of 8 treatments was done to control Varroa jacobsoni (Oudemans) infesting Carniolan honey bee Apis mellifera L. colonies, including Apistan, Lactic acid, and Formic acid, using some methods of application. Experiments were carried out in the experimental apiary of the Faculty of Agriculture, Shebin El-Kom Egypt during the period from August to October 1991. Results showed that Apistan was the best material for control V. jacobsoni followed by Lactic acid and Formic acid. Apistan completely controlled varroa mite at the 4 different doses (0.5, 1.0, 1.5, and 2.0 strips/colony) and no significant differences were found between the different doses. Lactic acid and Formic acid (at the rate of 1.5 cm3/frame) were slightly effective against the varroa mite in both methods of application (above and under the frames). The application of acids under the frames had better results than the application above the frames.