Microorganisms are an integral part of soil and take part in the cycle of matter [Watanabe 2002, Winding et al. 2005], thus also affecting soil fertility, which determines achieving an appropriate quality and quantity of the harvest. Intense farming and industrial pollution contribute to soil degradation, including biological soil, and a stable qualitative and quantitative composition of soil microbiocenoses is important for a correct functioning of this environment [Schimel and Gulledge 1998, Cavigelli and Robertson 2000]. Microbiological preparations have been available on the market for a number of years; their goal is to promote the growth of plants [Vessey 2003, Martyniuk 2011], e.g. by stimulating biological activity of soil. These products contain special