TECHNOLOGIES OF PRODUCING ORGANO-MINERAL FERTILIZERS
At the present time humic acid extracts and complex preparations produced on their basis with the introduction of micro- and macroelements are widely used as growth stimulants and protectors. Humates produced from different kinds of raw material share a number of common properties, when some parameters are substantially different. In Russia, there currently exist a number of technologies involving different approaches to the extraction of humic acids. The most of humic preparations are produced by chemical extraction and contain humic substances in the form of water-soluble salts - potassium or sodium humates. This paper considers and analyzes various technologies and equipment for producing organo-mineral fertilizers on the basis of peat, brown coal, biohumus and sapropel. The main shortcomings of the existing technologies have been revealed, ways to solve the problem have been suggested.