Accumulation of selenium in crops grown on sludge-treated soil
Uptake by barley (Hordeum vulgare L. var Briggs), Swiss chard (Beta vulgaris L. var. Fordhook), and radish (Raphanus sativus L. var. Cherry Belle) of Se from composted Los Angeles County sewage sludge applied to land was studied in a long-term field study. Sludge was applied at 0, 22.5, 45, 90, and 180 Mg/ha per year for 8 to 10 yr and the data reported here are for the last year of the study. Total surface soil Se increased with the highest rate of sludge addition from <0.1 mg/kg in the control soil to 1.2 mg/kg. Only 13 to 25% of the sludge-applied Se could be accounted for in the 0- to 15-cm depth of incorporation and there was no measurable Se (<0.1 mg/kg) in the subsoil to 150 cm. There was little or no measurable uptake of Se by barley leaf and grain at the level of detection (0.05 mg/kg) of this study, and there were also no significant increases in chard or radish Se concentrations with sludge addition. Selenium concentrations in chard (0.05-0.11 mg/kg) were severalfold lower than those in radish (0.17-0.26 mg/kg).
- Research Organization:
- Univ. of California, Riverside
- OSTI ID:
- 5564456
- Journal Information:
- J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 16:4; ISSN JEVQA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
BARLEY
BIOLOGICAL ACCUMULATION
BIOLOGICAL VARIABILITY
BRASSICA
CALIFORNIA
CEREALS
CONTAMINATION
CROPS
ELEMENTS
FEDERAL REGION IX
FOOD
GRASS
LAND POLLUTION
LOS ANGELES
NORTH AMERICA
PLANTS
POLLUTION
RADISHES
ROOT ABSORPTION
SELENIUM
SEMIMETALS
SEWAGE
SEWAGE SLUDGE
SLUDGES
SOILS
TRACE AMOUNTS
UPTAKE
USA
VEGETABLES
WASTES