Leila Urvas , Raili Jokinen, Seppo Hyvärinen

Uuttuva sinkki viljellyissä eloperaisissa maissa

Urvas L., Jokinen R., Hyvärinen S. Uuttuva sinkki viljellyissä eloperaisissa maissa.

English title: Extractability of zinc in cultivated organic soils

Tiivistelmä

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. Keywords: Extractable zinc, humus content, mould soil, peat soil, pH, total zinc

Avainsanat
peat soil; Extractable zinc; humus content; mould soil; pH; total zinc

Vastaanotettu 31.10.2017 Julkaistu 1.1.1992

Katselukerrat 2770

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