PMID: 16628894Apr 25, 2006Paper

A novel approach for the management of the chalkbrood disease infesting honeybee Apis mellifera L. (Hymenoptera: Apidae) colonies in Egypt

Communications in Agricultural and Applied Biological Sciences
A K MouradM E Morsy

Abstract

Except for, very few articles regarding the influence of some organic acids on the causative pathogen, Ascosphaera apis Maassen, no other studies pertaining to the management of the chalkbrood disease were performed, so far in Egypt. Laboratory investigations indicated that the fungicides, i.e (Galben C 46%, Radomil gold pluse WP 42.5% and Daconil 2787) at their recommended rates did not exert any effect on the mycelical growth of the fungus. Therefore, these fungicides were completely excluded from the subsequent apiary trials. As to the Mycostatin, it was found clearly that this mycostatic compound was effective at the rates of 50.000 and 100.000 IU. Regarding the essential oils (ceder, clove, peppermint, parsley, black cumin, garden rocket, and ricin), ceder oil surpassed the other oils and materials in controlling the subject disease. It is peculiar that no studies on the efficacy of ceder are available in the literature, so the present work using ceder oil is recorded for the first time worldwide. Thymol substance at the rate of 2% showed also a great success in managing the CHB disease. Baised on the obtained results, the promising materials in controlling the disease could be arranged according to their efficacy in a des...Continue Reading

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