Effect of sewage sludge-borne cadmium on crop production and on soil and plant composition
Teller sandy loan (fine-loamy, mixed, thermic, Udic Agriustolls) and Norge loam (fine-silty, mixed, thermic, Udic Paleustolls) were used in a greenhouse study with rates of cadmium (Cd) in sewage sludge. Two sewage sludges were mixed to produce a range of Cd treatments of 7 to 120 mg Cd kg/sup -1/ in a 44 mt ha/sup -1/ sludge treatment rate. Application depths of 0 to 15 cm and 15 to 30 cm for grain sorghum (Sorghum bicolor) and soybean (Glycine max) for two successive crops were included as experimental variables. Statistical design was a lattice square with five replications. Fresh and dry weights of plant materials were determined and analyzed for total content of Fe, Mn, Zn, and Cd after digestion. Soil samples from 0 to 7.5, 7.5 to 15, and 15 to 30 cm depths were taken after the second crop was harvested and analyzed for DTPA extractable Fe, Zn, and Cd. The soil pH and percent organic matter were determined, also, and compared to original soil analysis.
- Research Organization:
- Oklahoma State Univ., Stillwater (USA)
- OSTI ID:
- 6449629
- Resource Relation:
- Other Information: Thesis (Ph. D)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
CADMIUM
BIOLOGICAL ACCUMULATION
TOXICITY
GLYCINE HISPIDA
CHEMICAL COMPOSITION
CONTAMINATION
IRON
SOILS
SORGHUM
ZINC
BIOLOGICAL AVAILABILITY
GROUND DISPOSAL
PH VALUE
SEWAGE SLUDGE
BACTERIA
CEREALS
ELEMENTS
GRASS
LEGUMINOSAE
MANAGEMENT
METALS
MICROORGANISMS
PLANTS
RHIZOBIUM
SEWAGE
SLUDGES
TRANSITION ELEMENTS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
560300* - Chemicals Metabolism & Toxicology
510200 - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)