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Extractability of zinc in cultivated organic soils


Suo (Helsinki) 43(2): 37-44
Extractability of zinc in cultivated organic soils
The AAAc-EDTA extractable Zn content in mould soils (2.3+-2.0 mg/l soil) was not dependent on the total Zn content. In peat soils the extractable Zn content (2.0+-1.9 mg/l soil) increased with the increase in total Zn content. The proportion of extractable Zn to the total Zn was less than 8% in Zn deficient mould soils but about 40% in Zn sufficient mould soils. In peat soils the corresponding proportions were 30% and 60%. In mould soils the increases in humus content and acidity caused an increase of AAAc-EDTA extractable Zn. In peat soils extractable Zn content increased with increasing humus content up to 65%. The extractable Zn content was highest between pH values 5.0 and 5.5.


Accession: 002379395



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