HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Jones, R. L. Articles by Ziegler, E. L. Search for Related Content PubMed Articles by Jones, R. L. Articles by Ziegler, E. L. Agricola Articles by Jones, R. L. Articles by Ziegler, E. L.

Cadmium Content of Soybeans Grown in Sewage-Sludge Amended Soil¹

ABSTRACT

Disposal of municipal sludge on cropland raises the question of availability to plants of Cd which is often much more concentrated in sludges compared to native levels in soil. In a greenhouse experiment, Cd added in a factorial design with heated anaerobically digested sewage sludge and Cd acetate as factors was readily available to the soybean plant (Glycine max L.) where it was translocated to aerial parts, accumulating up to 18 ppm in the mature plant. Incremental additions of sewage sludge tended to depress the Cd levels observed in the mature plant and seed. Cd contents in the plant at harvest and in seed were directly related to soil levels extractable by 0.1/V HCl. Seed levels of about 1.0 ppm Cd produced by application of 144 metric tons/ha of sludge solids were not within toxic limits reported in the literature.

Key Words: toxic • plant life cycle

¹ Contribution from the Department of Agronomy, Univ. of Illinois, Urbana-Champaign, 61801. Published with permission of the Agr. Exp. Sta. Director. The authors gratefully acknowledge support by grants from the Metropolitan Sanitary District of Greater Chicago and the U. S. Environmental Protection Agency (DO-UI-0080) or the work reported here.

² Associate Professor of Soil Mineralogy and Ecology, Assistant Professor of Soil Ecology, and Research Assistant, respectively.