Study on the water quality of the Pisia–Gągolina river, one of the most interesting environmental object, was carried out. Samples of water for chemical research was taken twice a year: winter and in spring. Physical and chemical parameters of water quality were determined in comparison with legal requirement for five quality class of surface water. The most impact on water pollution has concentration of phosphate, dissolved oxygen and amonium. The concentration of dissolved oxygen depended on season and place of sampling. Present level of reservuares water contamination indicates eutrophication of river. ...
Traditional phosphorus fertilization of crops in Poland has a high environmental risk associated with the ease of transfer of into surface waters, as well as the high cost of production of such fertilizers. This imposes the need to find new solutions to fertilizer, which on one hand would be a lower risk to the environment, on the other hand would be equally accessible source of phosphorus for plants. One of them may be the use of phosphate - sulfur fertilizers (FS), characterized by a gradual release digestible phosphates (V), and hence the lower the migration to the water. The addition of sulfur increasing the availability of phosphorus from phosphate rock, is also a source of sulfur as a nutrient for plants. The aim of the study was to determine the effect of elemental sulfur to the ground rock phosphate on the phosphates (V) and sulfate (VI) ions permeation to waters. In vegetation experiments tested how use of phosphate - sulfur fertilizers affects the movement of phosphates (V) and sulfate (VI) ions to the water. Performed two two-year pot experiment, which tested effect 6 types of phosphate - sulfur fertilizer, differing in degree of milling phosphate (F1 and F2) and the ...
