Since synthetic mordants are forbidden on ecological farms, alternative means to pickle grain were searched for. Preliminary testing of biological preparation “Biokal” was carried out. During the research tests, winter wheat grain were pickled with synthetic mordant, biological preparations “Biokal 1” and “Biokal 2”. The greatest effect on prevailing species of fungi was achieved by pickling the grain with “Biokal 1” and “Biokal 2” solutions in concentration of 5 l t-1. Number of micromycetes decreased significanlty under treatment with “Biokal 2” in concentration of 15 l t-1. It proved to be as efficient as synthetic mordant.
Keywords: wheat, micromycetes, pickling, “Biokal”.