For centuries we have been living with bees and using their products. In the last few decades, one of the biggest problems for beekeepers was the suppression of the Varroa mites (Varroa destructor) and the production of bee products, that don't contain residuals of chemicals, which are used for suppression of the Varoa mites. Therefore, more and more beekeepers use natural methods and substances, For centuries we have been living with bees and using their products. In the last few decades, one of the biggest problems for beekeepers was the suppression of the Varroa mites (Varroa destructor) and the production of bee products, that don't contain residuals of chemicals, which are used for suppression of the Varoa mites. Therefore, more and more beekeepers use natural methods and substances, like organic acids. I studied the impact of adding organic acids in beehive on the production of propolis. The acids I used in my study were formic, lactic and acetic acid. I was interested if it was possible to combine the process of protecting bees against Varroa mites with production of propolis. In the experiment I used ten petri dishes in which I poured different concentrations of acids, mentioned above. In experiment, I used two different beehives, one was Langstroth beehive and the other was Slovenian AŽ hive. I wondered whether and how organic acids affect the production of propolis in beehive. During the experiment I observed, that the bees do respond differently to the presence of different organic acids, by applying propolis on the source of acid, although too small amounts to have production value. There were also no difference in quantity of propolis in different hive systems.
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