Document Type : Research Paper
Authors
1 MSc Graduated in Apiculture, Department of Animal Science, Faculty of agriculture, University of Zanjan, Iran.
2 Department of Animal Science, Faculty of agriculture, University of Zanjan, Zanjan, Iran
3 faculty member of animal sciences research center of iran
4 Zanjan Province Agricultural Jihad Organization, Zanjan, Iran
Abstract
In present study, the effect of a herbal compound (Thymogzal) including essential oils of thyme, mint, marze and oxalic acid on the control of Varroa mite and its comparison with chemical acaricides: Apistan and Biovarol (as positive controls) and control (as a negative control) was investigated. The experiment was conducted in CRD with 4 treatments and 6 replications. Before the experiment, the initial contamination of the colonies was measured and included as a covariate in the data analysis. Mortality in mites and bees, three times during the experiment and the amount of residual contamination after the experiment were measured. covariance analysis of data followed with Tukey test were used with SAS software (V.9.4). Based on the results, there was 82.40 % mortality on mites in Thymogzal, which was significantly higher compared to the Control (α= 0.01) and There was no significant difference in Thymogzal, Apistan and Bayvarol. The bee's mortality in Thymogzal was very low (0.1%) and had no significant difference with the control (0.07 %); While in Apistan treatment (0.14%) were significantly higher than both of them. The amount of residual contamination in Thymogzal (0.9%) was significantly lower than Control (4.51%); but it was'nt significantly different from the Apistan and Bavarol. So, due to the 82% effectiveness of Thymogzal in controlling The Varroa mite, and due to its naturalness, no time limit for consumption (due to no adverse effects on colony production) and least mortality in bees, it can be a good alternative for chemical acaricides.
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