On the participation of heterotrophic microorganisms in initial soil formation on waste from iron ore agglomeration

The results of studies of the development of heterotrophic microorganisms in embryosemes formed on the sand waste of iron ore agglomeration in Western Siberia are presented. At the initial stage of soil formation, low values of actual acidity and very low humus values were found in the initial embryosemes. It is established that such habitats are phytiotoxic, which is confirmed by data on the germination of seeds and the growth of seedlings: oats, oilseed radish and white mustard. It is proved that heterotrophic microorganisms are adapted to life in embryos. Azotobacteria retain vital activity, thanks to toxin and mucus formation, and actively multiply. Micromycetes exhibit dimorphism-yeast and mycelial growth types, which expands the possibilities of their vegetative reproduction and population preservation. It was revealed that organo-accumulative embryos are the most viable for plants and microorganisms. For the first time, the glow of mold fungi and Azotobacter under cereal plants and pine plantations was recorded. It is suggested that the emission of light energy, the presence of oxidases of microorganisms and plant lignin contribute to humification in an oligotrophic environment.