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Cadmium sulfate application to sludge-amended soils: III. Relationship between treatment and plant available cadmium, zinc, and manganese. [Beta vulgaris, Zea mays]

Journal Article · · Communications in Soil Science and Plant Analysis; (USA)
 [1];  [2]
  1. Univ. of Arkansas, Marianna (USA)
  2. Environmental Protection Agency Cincinnati, OH (USA)
Swiss chard (Beta vulgaris var. cicla) and corn (Zea mays L.) were used as biological indicators of Cd, Zn, and Mn availability in 12 soils amended with and without sludge, CdSO{sub 4} and CaCO{sub 3}. Soil Cd, Zn and Mn were partitioned into six fractions: soluble, exchangeable, adsorbed, organically bound, carbonate bound and sulfide bound, by the use of H{sub 2}O, KNO{sub 3}, H{sub 2}O, NaOH, EDTA and HNO{sub 3}, respectively. The data indicate that the major portion of total Cd was found in the carbonate, residual and organic fractions. Addition of CaCO{sub 3} caused an increase in the soluble and exchangeable fractions of Cd in the soils. The concentrations of Cd in the saturation extracts of the limed soils were significantly greater than those of the unlimed soils; however, this was not reflected in greater plant uptake of Cd from limed soils.
OSTI ID:
5086833
Journal Information:
Communications in Soil Science and Plant Analysis; (USA), Journal Name: Communications in Soil Science and Plant Analysis; (USA) Vol. 19:5; ISSN CSOSA; ISSN 0010-3624
Country of Publication:
United States
Language:
English