Lech Wojciech Szajdak, Anatol Sakowicz
Proceedings of the 14th International Peat Congress
Szajdak, Sakowicz 2012: Sapropel in Agriculture
Theme III. Agricultural use of peat and peatlands
An organic fertilizer refers to a soil amendment derived from natural sources that guarantees at least, the minimum percentages of sulfur, nitrogen, phosphorus, potassium, low content of heavy metals and other contaminations, low biomass weeds etc. It contributes to an increase in crop yields. Examples include plant and animal by-products, rock powders, seaweed, inoculants, and conditioners.
Sapropel characterizes bottom sediments occurring in freshwater basins. It locates near the peat. It is formed during long-term different kinds of chemical, biochemical, biological and physical processes such as degradation of aquatic vegetation, decomposition of life forms reminders and/or organic and inorganic soil pieces drifted by water, conversions of processes and mechanism of organic compounds.