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

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (40) Citing Articles via Google Scholar Google Scholar Articles by Norvell, W.A. Articles by Welch, R.M. Search for Related Content PubMed Articles by Norvell, W.A. Articles by Welch, R.M. GeoRef GeoRef Citation Agricola Articles by Norvell, W.A. Articles by Welch, R.M.

DIVISION S-8-NUTRIENT MANAGEMENT & SOIL & PLANT ANALYSIS

Association of Cadmium in Durum Wheat Grain with Soil Chloride and Chelate-Extractable Soil Cadmium

^a U.S. Plant, Soil & Nutrition Lab., USDA-ARS, Tower Rd., Ithaca, NY 14853 USA
^b Dep. Crop and Soil Sciences, Cornell Univ., Ithaca, NY 14853 USA
^c Dep. Soil Science, ND State Univ., Fargo, ND 58105 USA

wan1{at}cornell.edu

Cadmium uptake by food crops needs to be understood in order to limit Cd accumulation in the food chain. Cadmium is a potentially toxic heavy metal with no known benefit to humans, and plant foods are the predominant sources of Cd in human diets. In this study, 124 paired samples of soil and grain were collected from a field of durum wheat [Triticum turgidum L. subsp. durum (Desf.) Husn.] cultivar Munich in northeastern North Dakota. This field on the Langdon Research Extension Center was selected for study because it provided a range in soil pH and salinity. Cadmium in the durum grain ranged widely from 0.025 to 0.359 mg kg^-1. Accumulation of Cd in grain was strongly and positively associated with soil salinity as represented by soluble chloride, soluble sulfate, or extractable Na, and also with chelate-extractable Cd. Relationships to salinity were curvilinear. Concentrations of Cd in grain were not closely related to soil pH. The relationship of Cd in grain to the logarithm of water-extractable soil Cl^- (Cl_w) was especially close. A predictive model based on chelate-extractable Cd and logCl^-_w in soil accounted for 66% of the variability of Cd in grain. Based on these results, and published work for other crops, we believe that the accumulation of Cd in durum wheat grain is enhanced by Cl^- in the soil. Although the mechanism is not clear, it is likely to involve increased solubility or availability of soil Cd resulting from the formation of chloro-complexes in soil solution.

Abbreviations: Cd_dtpa, Na_dtpa, and Zn_dtpa, DTPA-extractable Cd, Na, and Zn • Cd_g, concentration of Cd in grain • CEC, cation-exchange capacity • Cl_w and SO_4w, Cl^- and SO^2-₄ extracted by water • CV, coefficient of variation • DTPA, diethylenetriaminepentaacetic acid • IC, inorganic C • OC, organic C • SO₄–S, sulfate expressed as S • TC, total C

This article has been cited by other articles:

				A. H. Khoshgoftarmanesh and R. L. Chaney Preceding Crop Affects Grain Cadmium and Zinc of Wheat Grown in Saline Soils of Central Iran J. Environ. Qual., June 27, 2007; 36(4): 1132 - 1136. [Abstract] [Full Text] [PDF]

				C. Oporto, C. Vandecasteele, and E. Smolders Elevated Cadmium Concentrations in Potato Tubers Due to Irrigation with River Water Contaminated by Mining in Potosi, Bolivia J. Environ. Qual., June 27, 2007; 36(4): 1181 - 1186. [Abstract] [Full Text] [PDF]

				D. W. Franzen, T. Nanna, and W. A. Norvell A Survey of Soil Attributes in North Dakota by Landscape Position Agron. J., June 5, 2006; 98(4): 1015 - 1022. [Abstract] [Full Text] [PDF]

				A. H. Khoshgoftarmanesh, H. Shariatmadari, N. Karimian, M. Kalbasi, and S. E. A. T. M. van der Zee Cadmium and Zinc in Saline Soil Solutions and their Concentrations in Wheat Soil Sci. Soc. Am. J., February 27, 2006; 70(2): 582 - 589. [Abstract] [Full Text] [PDF]

				A. H. Khoshgoftar, H. Shariatmadari, N. Karimian, M. Kalbasi, S. E. A. T. M. van der Zee, and D. R. Parker Salinity and Zinc Application Effects on Phytoavailability of Cadmium and Zinc Soil Sci. Soc. Am. J., November 1, 2004; 68(6): 1885 - 1889. [Abstract] [Full Text] [PDF]

				C. J. Willenborg, R. H. Gulden, E. N. Johnson, and S. J. Shirtliffe Germination Characteristics of Polymer-Coated Canola (Brassica napus L.) Seeds Subjected to Moisture Stress at Different Temperatures Agron. J., May 1, 2004; 96(3): 786 - 791. [Abstract] [Full Text] [PDF]

				K. Weggler, M. J. McLaughlin, and R. D. Graham Effect of Chloride in Soil Solution on the Plant Availability of Biosolid-Borne Cadmium J. Environ. Qual., March 1, 2004; 33(2): 496 - 504. [Abstract] [Full Text] [PDF]

				M. L. Adams, F. J. Zhao, S. P. McGrath, F. A. Nicholson, and B. J. Chambers Predicting Cadmium Concentrations in Wheat and Barley Grain Using Soil Properties J. Environ. Qual., March 1, 2004; 33(2): 532 - 541. [Abstract] [Full Text] [PDF]

				U. Schmidt Enhancing Phytoextraction: The Effect of Chemical Soil Manipulation on Mobility, Plant Accumulation, and Leaching of Heavy Metals J. Environ. Qual., November 1, 2003; 32(6): 1939 - 1954. [Abstract] [Full Text] [PDF]

				J. Wu, W. A. Norvell, D. G. Hopkins, and R. M. Welch Spatial Variability of Grain Cadmium and Soil Characteristics in a Durum Wheat Field Soil Sci. Soc. Am. J., January 1, 2002; 66(1): 268 - 275. [Abstract] [Full Text] [PDF]