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 Elseewi, A. A. Articles by Page, A. L. Search for Related Content PubMed Articles by Elseewi, A. A. Articles by Page, A. L. Agricola Articles by Elseewi, A. A. Articles by Page, A. L.

Availability of Sulfur in Fly Ash to Plants¹

ABSTRACT

Fly ash from a coal-fired power plant was added to soil in variable amounts and the availability of sulfur to a variety of plant species from this source was compared to that of gypsum. The study was conducted under greenhouse conditions with a calcareous and two acid soils which were low in plant-available sulfur.

The fly ash used contained 0.4% S, all of which is extractable by NH₄OAc. When mixed with a calcareous and an acid soil at rates of 1–2% by weight, the fly ash corrected a S deficiency in the soil and maximized the yield of alfalfa (Medicago sativa L.) and bermudagrass (Cynodon dactylon L.). The increase in yield (twofold to threefold in alfalfa and 40 to 70% in bermudagrass) was accompanied by an increase in the S content of the plant tops from a deficiency level (< 0.1%) to a sufficiency level ( 0.2%). The availability of fly ash-S and gypsum (CaSO₄·2H₂O)-S was compared by the addition of equal amounts of S from the two sources (25-, 50-, and 100-mg S/kg soil) to an acid soil. Yield and S content of turnip (Brassica rapa L.) and white clover (Trifolium repens L.) were equally improved, demonstrating that the availability of fly ash derived-S is equivalent to that of gypsum-S.

Key Words: coal-fired power plants • waste products • land disposal • sulfur deficiency • plant nutrition

¹ Contribution from the Dep. of Soil and Environ. Sci. and the Kearney Found. of Soil Sci., Univ. of California, Riverside, CA 92521. Presented before Div. A-5, Am. Soc. of Agron., Houston, Tex. 28 Nov. 1976.

² Postdoctoral Research Scientist and Professors of Soil Science, respectively.

Received for publication May 16, 1977.

This article has been cited by other articles:

				A. W. Schumann and M. E. Sumner Chemical Evaluation of Nutrient Supply From Fly Ash-Biosolids Mixtures Soil Sci. Soc. Am. J., January 1, 2000; 64(1): 419 - 426. [Abstract] [Full Text]

				C.J. Warren, L.J. Evans, and R.W. Sheard Release of Some Trace Elements From Sluiced Fly Ash On Acidic Soils With Particular Reference To Boron Waste Management Research, January 1, 1993; 11(1): 3 - 15. [Abstract] [PDF]

				I. R. Straughan, I. R. STRAUGHAN, A. A. ELSEEWI, A. L. PAGE, I. R. KAPLAN, R. W. HURST, and T. E. DAVIS Fly Ash-Derived Strontium as an Index to Monitor Deposition from Coal-Fired Power Plants Science, June 12, 1981; 212(4500): 1267 - 1269. [Abstract] [PDF]