Biochemical Assessment of Humate-Sapropel Raw Materials of Maloe Simaginskoe Lake.

The biochemical composition of sapropels from Maloe Simaginskoe Lake, which were studied using modern methods of atomic emission spectrometry (ICP-AE) and high-performance liquid chromatography (HPLC), is presented. This source of organic matter is now the least in demand in the country; many deposits have been abandoned. However, such organic colloids and their humic extracts are not inferior in their spectrum of action to extracts from peat or coal. The predominance of the proportion of potassium and sodium in the gross composition of macroelements is shown. Among microelements, both in bulk and in mobile forms, iron and manganese ions dominated. Apparently, the Fe cation is bound in polyligand forms with carboxylic acids. The ratio of these two elements in the samples averaged 10 : 1—Fe : Mn. The content of heavy metals was within the limits acceptable for sapropel fertilizers according to GOST R 54000-2010. The results obtained during this study can be used further in the biotechnology of intensive crop production, when growing crops in a hydroponic environment while minimizing the use of synthetic fertilizers. In addition, since carbohydrates were found in all samples of the raw materials studied, the extracts can be used to develop modified nutrient media in agricultural microbiology to stabilize the titer of beneficial rhizobacteria. [ABSTRACT FROM AUTHOR]