Effect of eucalyptus leaf extract, Virginia, Barley and Basma tobacco smoke on Varroa mite of honey bee
Kamiab, M. | Roostaei-Ali Mehr, M. | Hosseini Moghadam, S. H. | Sahragard, A.
The present study was performed to investigate the effect of eucalyptus leaf extract and tobacco smoke on Varroa mite using 36 hives over a period of 34 days. In one experimental group, no action was taken to control Varroa mite (control) and other one (positive control) Apistan Strip were placed in hive for 34 days. In the other experimental groups, Varroa mite was controlled using Barley, Basma, Virginia leaf tobacco smoke and Eucalyptus leaf extract in the first five days (first time) and the last four days (second time) during the control period. In the eucalyptus extract treatment, 15 ml of the extract solution (0.1 ml/mg) was sprayed between frames daily. In tobacco leaf smoke treatments (Barley, Basma, Virginia), the amount of 3 g of tobacco leaf was smoked. Tick shedding (daily), the number of larvae in each frame (on days 5 and 34) and the amount of honey (after 150 days) was measured. The main effect showed that mite shedding was higher in eucalyptus leaf extract (10. 3?2.01), Apistan (9.41?2.01) and Virginia tobacco smoke (7.41?2.01) than the control (0?2.01, P
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