Heavy metal contents of timothy
1999
Kaerblane, H. | Kevvai, L. | Kanger, J. (Estonian Agricultural Univ., Tartu (Estonia))
The content of dangerous heavy metals (Cd, Hg, Pb) and also a few heavy metals that are seen as microelements (Co, Cu, Mo, Mn, Zn) of timothy is characterised by 74 samples collected from field and pastures of Estonia. Final data of content of heavy metals in timothy characterised the variation and the average values presented on figures 1 and 2. It can be seen there is always a smaller degree of dangerous heavy metals and microelements in timothy than the maximum allowed grade in Estonia for fodder. Thus, the timothy is not polluted by heavy metals in Estonia. The content of some microelements (Co, Cu, Mn, and Zn) is lower than the optimal degree, therefore the biological quality of the fodder is lowered also. Timothy must be fertilized with fertilizers contained Co, Cu, Mn and Zn to obtained the high quality fodder
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