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A complete loss or decrease of varroacid efficacy of Apistan (tau-fluvalinate) has been stated in some Mediterranean and Austrian regions. The results of studies on this problem presented at the 34-th International Congress of Apimondia in Lausanne - 1995 poited to the development of Varroa jacobsoni mites resistant to Tau-fluvalinate and other acaracid pyrethroids. Since tau-fluvalinate has been...
The residues of fluvalinate accumulated in the wax promote the selection and development of Varroa jacobsoni resistance to fluvalinate activity. Probably Varroa jacobsoni will be resistant to other acaricidal synthetic pyrethroids (due to cross-resistance). The possibilities of using for honey-bee protection the inserted to hives strips, containing known pesticides, such as amitraz, malathion and...
In consequence of occuring and expansion of Varroa Jacobsoni mite new problem has been arised to ensure of effective honey bee protection. In this paper, research-developmental works, realised in 1984-1991, to solve that problem have been presented. Through RD works production of I generation varroacidal formulations (Warosekt and Apiwarol AS) have been started and up-to-date formulations are being...
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