Plant uptake of cadmium as influenced by cation exchange capacity, organic matter, zinc, and soil temperature
The effects of several soil factors on cadmium (Cd) accumulation by plants were determined. Cadmium concentration in oat shoots (Avena sativa L.) was decreased by increasing the cation exchange capacity (CEC) of the soil. Except for its CEC effect, organic matter did not influence the concentration of Cd in oat shoots. The results indicate that the retaining power of organic matter for Cd is predominately through its CEC property rather than chelating ability. Cadmium concentration of soybean shoots (Glycine max L.) increased soil temperature. In the presence of 10 ppm of soil-applied Cd, the addition of Zn from the 5 to 50 ppm range, apart from raising the Zn concentration, significantly increased the Cd concentration of soybean shoots. The increased Cd concentration was primarily due to decreased plant growth. A depression in Cd concentration of soybean shoots, relative to control, began to occur at the 100 ppm Zn level. 12 references, 5 tables.
- Research Organization:
- Ohio State Univ., Wooster
- OSTI ID:
- 5553103
- Journal Information:
- J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 3:2; ISSN JEVQA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
CADMIUM
CATIONS
CEREALS
CHARGED PARTICLES
DATA
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
EXPERIMENTAL DATA
GLYCINE HISPIDA
GRASS
GROWTH
INFORMATION
INHIBITION
ION EXCHANGE
IONS
LEGUMINOSAE
METALS
NUMERICAL DATA
OATS
ORGANIC MATTER
PLANT GROWTH
PLANTS
RESPONSE MODIFYING FACTORS
ROOT ABSORPTION
SOILS
TEMPERATURE EFFECTS
UPTAKE
ZINC