CS261124B1 - Varrocidal agent for aerosol application - Google Patents

Abstract

The product is used to treat bees against varroa. It solves the problem of freezing and low efficiency of existing products when used at low temperatures. In general, regardless of the temperature, it enhances the effect, shortens exposure and solves energy. The essence of the solution is that the acaricide is mixed with acetone in a weight ratio of 1: : 50 to 1: 5,000 and this solution is applied to bee colonies as an aerosol.

Description

The invention relates to the preparation and use of a composition with varrocidal effects in beekeeping.

The agents used so far have an active substance or acaricidal preparation emulsified in water or in a petroleum product. The disadvantage of a water emulsion is its freezing during aerosol application at low temperatures, which technically makes the use of this method impossible at all, or requires additional heating of the inlet and outlet air, which requires additional equipment and additional energy input. Furthermore, with water emulsions, bees in the winter cluster are not disturbed, which reduces the effectiveness of the intervention. To create an aerosol from a water emulsion, regardless of the temperature, a significant energy input and a long exposure time are required. Petroleum products are not suitable from a hygienic point of view.

These disadvantages are eliminated by the composition according to the invention, the essence of which consists in mixing the acaricide with acetone and applying it as an acetone solution in the form of an aerosol.

The product does not freeze at low temperatures, is non-toxic to bees, is hygienically harmless, and excites bees for a short time, which ensures harmless loosening of the winter clump at low temperatures and thus ensures effectiveness. Regardless of the temperature, the product intensifies the effect, shortens the exposure time and saves energy.

We demonstrated the harmlessness to bees by monitoring the fall of bees onto the mat after treatment for 2 months (November — January) in a group of 300 bee colonies and determining longevity in a loop experiment. In neither of the two methods were significant differences obtained compared to controls treated with an aerosol of water emulsion.

We demonstrated the synergizing effects of acetone compared to water in experiments conducted at extreme temperatures of -7 °C, in December 1986. The effectiveness of the treatment is determined by the decrease in the number of live mites on bees before and 24 hours after treatment.

Table 1

Effectiveness of treatment against varroa mites

Mixture Number of bee colonies

Dose of active ingredient Effectiveness on bee colony %

Tactical + water

1: 60 4

Tactic + acetone: 60 4

Mavrik + water

1:800 4

Mavrik + acetone

1:800 4

Suitable acaricides that have been successfully used so far include Taktic (active ingredient amitraz), Mavrik (active ingredient fluvalinate) and various preparations with the active ingredient coumaphos.

amltraz 6 mg 75 % a-mitraz 6 mg 93 % fluvalinate 1 mg 84 % fluvalinate 1 mg 97 %

The product can be used in all beekeeping farms that are equipped with an aerosol generator with anti-spark protection.

Claims (1)

Subject Varrocidal aerosol delivery agent based on acetone miscible with acetone, characterized in that the other synergistically active ingredient is acetone and the two bases of the invention are mixed in a weight ratio of 1 part acaricide to 50 to 5,000 parts acetone.