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 HighWire Citing Articles via Google Scholar Google Scholar Articles by Mitchell, G. A. Articles by Page, A. L. Search for Related Content PubMed Articles by Mitchell, G. A. Articles by Page, A. L. Agricola Articles by Mitchell, G. A. Articles by Page, A. L.

Yield and Metal Composition of Lettuce and Wheat Grown on Soils Amended with Sewage Sludge Enriched with Cadmium, Copper, Nickel, and Zinc¹

ABSTRACT

Lettuce (Lactuca sativa L. vat. longifolia) and wheat (Triticum aestivum L. ‘Inia’) were grown under greenhouse conditions on an acid and a calcareous soil amended with sewage sludge enriched with Cd, Cu, Ni, or Zn to determine relative toxicities of the metals and uptake characteristics of the test plants.

While the order of toxicities was not the same for all soil and plant-species combinations, Cd was, in general, most toxic followed by Ni, Cu, and Zn. The latter three metals were about equally toxic to wheat grown in the calcareous soil; in the acid soil, Cu was about four times and Ni about six times more toxic to wheat than was Zn. Yield results indicated strong soil and plant species effects. Nickel was more phytotoxic to lettuce and wheat grown in the acid than in the calcareous soil, whereas Cd, Cu, and Zn toxicity depended on plant species and metal-concentration range. At relatively low soil treatments, Cu and Cd were more toxic to lettuce grown in the calcareous than in the acid soil.

Both DTPA and water-soluble metal concentrations were significantly correlated with metal uptake by plants. Water-soluble concentrations of Cd, Cu, and Ni better predicted plant uptake of these metals while Zn uptake was more closely correlated with DTPA-soluble Zn.

Key Words: heavy metals • phytotoxicity • waste disposal • DTPA extractable metals

¹ Contribution of the Dep. of Soil Sci. and Agric. Eng. and the Kearney Found. of Soil Sci., Univ. of California, Riverside, CA 92521; Presented before Div. A-5, Am. Soc. Agronomy, Houston, Tex., Dec. 1976.

² Staff Research Associate and Professors of Soil Science, respectively. Present address of senior author is Dep. of Agronomy, Coastal Plain Exp. Stn., Tifton, GA 31794.

Received for publication January 5, 1977.

This article has been cited by other articles:

				V. Chaignon and P. Hinsinger A Biotest for Evaluating Copper Bioavailability to Plants in a Contaminated Soil J. Environ. Qual., May 1, 2003; 32(3): 824 - 833. [Abstract] [Full Text] [PDF]