Plant Uptake of Cadmium‐109 and Zinc‐65 at Different Temperature and Organic Matter Levels

ABSTRACT The uptake of 109Cd and 65Zn and their stable isotopes by ryegrass (Lolium multiflorum Lam.), grown on two different soil types, was investigated in climatically controlled growth chambers at 9 and 21°C. The soils were treated with 0 and 4% organic matter (pig [Sus scrofa] manure) and spike...

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Bibliographic Details
Published in:Journal of environmental quality 2001-05, Vol.30 (3), p.869-877
Main Authors: Almås, Å.R., Singh, B.R.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Biological Availability
Cadmium
Cadmium Radioisotopes - pharmacokinetics
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
Fractionation
Fundamental and applied biological sciences. Psychology
Growth chambers
Lolium - physiology
Organic Chemicals
Organic matter
Plant tissues
Soil
Soil analysis
Soil and water pollution
Soil Pollutants - pharmacokinetics
Soil science
Soil solution
Soil types
Solubility
Speciation
Stable isotopes
Temperature
Zinc
Zinc Radioisotopes - pharmacokinetics
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Summary:ABSTRACT The uptake of 109Cd and 65Zn and their stable isotopes by ryegrass (Lolium multiflorum Lam.), grown on two different soil types, was investigated in climatically controlled growth chambers at 9 and 21°C. The soils were treated with 0 and 4% organic matter (pig [Sus scrofa] manure) and spiked with 109Cd and 65Zn before sowing. The organic matter addition resulted in increased uptake of the 109Cd, Cd, and Zn by ryegrass, but the uptake of 65Zn was decreased. The latter effect was ascribed to isotopic dilution of 65Zn as the amount of stable Zn in the plant tissues increased with the organic matter addition. The effect of temperature was more pronounced than that of organic matter addition, and the uptake of both 109Cd and 65Zn and their stable isotopes was higher in ryegrass grown at 21°C than that grown at 9°C. Results from fractionation and speciation analysis of soil cadmium and zinc were correlated with plant uptake, and there was a good consistency between observed plant uptake and the physico–chemical forms of cadmium and zinc in soil and soil solution presumed to be plant available.
ISSN:0047-2425
1537-2537
DOI:10.2134/jeq2001.303869x