Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 July 1963
Published in Agron J 55:355-358 (1963)
© 1963 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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A Collaborative Study of the Ethylenediaminetetraacetate (EDTA) Method for Rating Agricultural Limestones. II. Relationship of Ratings and of Calcium Carbonate Content of Limestones to Their Reactivity in the Soil1

Colin W. Whittaker, J. H. Axley, Michael Peech, J. E. Steckel, E. O. McLean and Albert S. Hunter2

Synopsis: Rates of reaction of representative agricultural limestones in various soils were highly correlated with reactivity as measured by reaction with the di- or trisodium salts of ethylenediaminetetraacetic acid under standardized conditions, and with the calcium carbonate content of the limestones. The trisodium salt seemed superior as a rating reagent but none of the three reactivity indices accounted for all the variation in reactivity of the limestones in the soil.

1 Joint contribution from the U. S. Fertilizer Laboratory, Soil and Water Conservation Research Division, ARS, USDA, and the Agricultural Experiment Stations of Maryland, Cornell University, Massachusetts, Ohio, and Pennsylvania. Approved for publication by the respective Experiment Station Directors and designated as Maryland Agr. Exp. Sta. Scientific Article No. A1006, Contribution No. 3394; Agronomy Paper No. 597, Department of Agronomy (Cornell) ; Contribution No. 68 (Massachusetts) ; Journal Paper No. 7662 (Ohio); and as paper No. 2711 in the journal series (Pennsylvania).

2 Chemist, Soil and Water Conservation Research Division, ARS, USDA; Associate Professor of Soils, Maryland Exp, Sta.; Professor of Soil Science, 'Cornell University; Former Professor of Agronomy, Univ. of Massachusetts Agr. Exp. Sta.; Professor of Agronomy, Ohio State Univ.; and Professor of Soil Technology, Pennsylvania State Univ. Appreciation is expressed to Dorothy M. Carroll, ARS, USDA, for her able assistance with preliminary comparison of methods, as a collaborator, and with statistical analysis of the results.

Received for publication November 26, 1962.




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Environmental Quality		 The Plant Genome
Copyright © 1963 by the American Society of Agronomy.