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Studies on soil reaction: IV. The soil reaction of continuously manured plots at Rothamsted and Woburn

Published online by Cambridge University Press:  27 March 2009

Edward M. Crowther
Edward M. Crowther
Affiliation:
Soil Physics Department, Rothamsted Experimental Station.
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Extract

The Rothamsted Park Grass and Woburn Barley soils are almost all acid. Ammonium sulphate has caused a considerable increase in acidity, and sodium nitrate a slight decrease. Mineral manures have but little effect, and potassium sulphate has slightly increased trie acidity of the subsoil below the more acid plots. There is some evidence that the pH value 3·8 represents a maximum acidity in the Rothamsted soil. The change in pH value as a result of liming is less than that shown in the laboratory, owing in part to the subsoil acidity.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 15 , Issue 2 , April 1925 , pp. 222 - 231
Copyright
Copyright © Cambridge University Press 1925

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References

page 222 note 1 Crowther, E. M., III. This Journal, pp. 201–221.Google Scholar

page 225 note 1 Crowther, E. M., V. This Journal, pp. 232–236.Google Scholar

page 225 note 2 Bothamsted Experimental Station Report, 1921–22, p. 63.

page 226 note 1 Brenchley, W. E., “Manuring of Grassland for Hay,” Rolhamsttd Monographs on Agricultural Science. Longmans, Green and Co., London, 1924.Google Scholar

page 228 note 1 Page, H. J. and Williams, W., Trans. Faraday Soc. 1925.Google Scholar

page 230 note 1 Fisher, E. A., Journ. Agric. Sci. 11, p. 58, 1920.Google Scholar