Cadmium uptake by barley as affected by Cd sources and pH levels

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Authors:Singh, Bal Ram; Myhr, Kristen
Author Affiliations:Primary:
Agricultural University of Norway, Department of Soil and Water Sciences, As, Norway
Other:
Norwegian Crop Research Institute, Stjordal, Norway
Volume Title:Contaminants and the soil environment
Volume Authors:Naidu, R., editor
Source:Geoderma, 84(1-3), p.185-194; First international conference on Contaminants and the soil environment, Adelaide, South Aust., Australia, 1996, edited by R. Naidu. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0016-7061
Publication Date:1998
Note:In English. 28 refs.; illus., incl. 4 tables
Summary:A field experiment in the central part of Norway was conducted for four cropping seasons on a silt loam soil adjusted to pH 5.5 and 6.5 to study the Cd uptake by barley. Cadmium was applied as NPK fertilizers (at three rates equivalent to 0.03, 2.7 and 12.0 g ha-1), CdCl2 (12.0 g) and phosphate rock (12.0 g). The concentration of Cd in barley tended to increase with increased Cd applied through CdCl2 in the last two years. Other sources of Cd did not show any consistent effect on Cd concentration in barley. Cadmium concentration in barley increased from the first to the fourth year in all the treatments. In the first three years, Cd concentration in barley was higher at higher pH but the reverse was the case in the fourth year. Both NH4NO3- and DTPA-extractable Cd in the soil increased with increasing rate of Cd through different sources but the concentration of extractable Cd in the soil decreased with increased pH. The effect of soil pH was more pronounced on NH4NO3-extractable Cd than on DTPA-extractable Cd. No significant correlation between extractable Cd and plant Cd was observed. The results suggest that the concentration of Cd in barley grain was not affected significantly by the Cd applied through different sources in any of the years under study. Plant Cd did not show any significant correlation with the extractable Cd in the soil. A minor tendency of plant Cd to increase with increased soil pH was observed. Abstract Copyright (1998) Elsevier, B.V.
Subjects:Agriculture; Cadmium; Concentration; Controls; Fertilizers; Field studies; Geochemistry; Heavy metals; Loam; Metals; PH; Plantae; Pollution; Soil treatment; Soils; Europe; Norway; Scandinavia; Western Europe; Field crops; Hordeum; Stjordal Norway
Coordinates:N632700 N632700 E0105700 E0105700
Record ID:1998041088
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
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