SEQUENTIAL ANALYSIS OF PHOSPHORUS COMPOUNDS OF SOIL MATERIAL FERTILIZED WITH WASTE ORGANIC MATERIALS

摘要

Soil material was taken from pots after two years of the study involving the investigation of two parameters: I - liming (without liming and with liming according to 1 unit acidic reaction applied as CaCO3; II - organic fertilization: waste activatedsludge from Siedlce, broiler chicken litter and brown coal from the Turów mine). The organic fertilization was applied in a dose of 2 g of organic carbon per 1 kg of soil material. The total content of phosphorus was determined by the ACP-AES method after earlier decomposition of the organic substances by the 'dry combustion method'. The investigated fractions of phosphorus were separated by the Chang-Jackson method using the modification of Peterson and Corey. The organic materials used in this experiment significantly differentiated the content of total phosphorus and its fractions in the analysed soil materials. The highest content of total phosphorus was determined in the soil materials fertilized with broiler litter and waste activated sludge from Siedlce, and the lowest in the soilmaterial without the addition of any organic materials. In all investigated soil materials the highest levels of extractable phosphorus was determined in the fraction of aluminium phosphate and the lowest in the fraction of occluded phosphate.