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Influence of waterlogging on availability and uptake of heavy metals by oat grown in different soils

GERDA KROG BJERRE and HANS-HENRIK SCHIERUP
Plant and Soil
Vol. 88, No. 1 (1985), pp. 45-56
Published by: Springer
Stable URL: http://www.jstor.org/stable/42934865
Page Count: 12
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Influence of waterlogging on availability and uptake of heavy metals by oat grown in different soils
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Abstract

The influence of waterlogging on availability and uptake of cadmium, lead, zinc, copper, manganese and iron by oat was studied. The experiments were carried out as a pot experiment using a sandy loam, a sandy soil and an organic soil and with waterlogging for 21 days in the period of growth. Selective extractants were used to remove metals held in different soil fractions. Waterlogging resulted in the release of manganese and iron from the oxide bound reservoirs to the soluble, exchangeable and inorganic reservoirs, and increase in cadmium, lead and zinc in the inorganic reservoir was observed. Only small effects on the availability of copper was observed. Manganese and iron concentrations increased in all plant parts except iron in the grain. Cadmium, lead and copper concentrations increased in the roots, while cadmium, lead, zinc and copper concentrations decreased in the leaves. With few exceptions the total uptake of manganese and iron increased, while the total uptake of cadmium, lead, zinc and copper decreased during waterlogging. The total uptake was for all metals except cadmium lowest from the organic soil.

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