Effect of soil contamination with cadmium, chromium and mercury on the yield and content of macroelements in oats
Wyszkowski, M.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Environmental Chemistry)E-mail:[email protected] | Wyszkowska, J.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Microbiology)
This research aimed at determining the effect of growing soil contamination with cadmium, mercury as well as trivalent and hexavalent chromium on the yield and macroelement content in oats. The contamination of soil with cadmium, mercury and chromium(VI) strongly inhibited the growth and development of oats. Of all the heavy metals investigated, chromium(VI) appeared the most toxic. The contents of nitrogen, phosphorus, potassium, sodium, magnesium, and calcium depended on the type of metal and degree of soil contamination. A high content of Cd, Cr(VI) and Hg in the soil increased the content of macroelements in oats, with the greatest changes reported for phosphorus and calcium. The impact of chromium(III) on both the yield and macroelement content in oats was considerably lower compared to that of chromium(VI)
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