تأثير المستخلص المائي و الكحولي لنبات إكليل الجبل (Rosmarinus officinalis L.)‎ في مكافحة الفاروا (Varroa destructor Oud.)‎

Abstract EN

This study was conducted on honeybee colonies Apis mellifera syriaca in the Apiary Research Laboratory, Faculty of Agriculture, Damascus University, in collaboration with the General Commission for Scientific Research during March and April of 2014.

The study aimed to evaluate the efficiency of the aqueous and alcoholic extracts of rosemary (Rosmarinus officinalis) to control Varroa destructor parasite under field conditions.

Results showed that spraying rosemary aqueous extract directly on honey bees located on the frames with 50 ml per each colony of 5 and 10 % (125, 250 mg plant tissue / liter ) concentrations led to significant 64.49 and 65.49 % efficiency, respectively, as compared to 31.46 % for the water control.

The alcoholic extract showed an efficiency of 72.73 and 77.37% after dipping three wood slices in the alcoholic extract per each colony with 2 and 4 ml / slice (extracted from 2000 and 4000 mg plant tissue / liter), respectively.

There were significant differences (P = 0.05) in comparison with control and the effect continued for 5 days following application.

Accordingly, the alcoholic extract is recommended for use due its ease of application and long duration effect.

Consequently, using rosemary plant extract repeatedly is important to control Varroa parasite and reduce its population to produce beehive products free from chemical residues.