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. ...
Qualification of Phytophthora by Zentmayer as the destructive factor for plants indicates on that group of pathogens as very dangerous. Results obtained from previous studies showed on Phytophthora species as the threat of all group of plants growing in open field, under covering and natural ecosystem. Phytophthora spp. were detected in all analyzed water sources such as water reservoirs and canals localized in nurseries and in rivers flowing through horticulture, agriculture and forest areas. Results of the studies indicate on P. plurivora, P. cambivora, P. cinnamomi, P. citrophthora, P. cryptogea, P. lacustris and P. megasperma as the dominant species in Polish watercourses and reservoirs. Obtained results confirmed the pathogenicity of Phytophthora isolates received from different water sources ...
