Study on the acaricidal effect of some ethereal oils added to the food of bees
2006
Nenchev, P. (Trakijski Universitet, Stara Zagora (Bulgaria)) | Zhelyazkova, I. (Trakijski Universitet, Stara Zagora (Bulgaria)) | Gurgulova, K. (Natsionalen Diagnostichen Nauchnoizsledovatelski Veterinarno Meditsinski Institut, Sofia (Bulgaria)) | Pavlov, D. (Trakijski Universitet, Stara Zagora (Bulgaria))
Bee colonies are feeded three times at an interval of seven days with honey - sugar candy (100 g single dose), including 1% ethereal oil for experimental groups. Colonies from first control group (K1) are treated with Rodovar (active substance amitraz) and those from second control group (K2) are not treated with acaricidal preparation aiming detection of the number of naturally fallen mites. Control treating with Apiprotect (active substance coumaphos) is done at the end of experimental period. The effectiveness of the tested ethereal oils as acaricidal means is calculated based on the results. It is found that ethereal oils of salvia, basil, white marjoram and dill added to honey - sugar candy in a dose 1% have an acaricidal effect on the mites Varroa jacobsoni (37.38 - 43.21%).
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