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The effects of agronomy on C and N distribution in soil organo-mineral fractions

Published online by Cambridge University Press:  27 March 2009

T. McM. Adams
T. McM. Adams
Affiliation:
Agricultural and Food Chemistry Department, The Queen's University of Belfast and Agricultural and Food Chemistry Research Division, Department of Agriculture for Northern IrelandNewforge Lane, Belfast, BT9 5PX
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Summary

Soils from grass-arable cropping sequences and from an experiment where grassland had been treated with slurry were dispersed by shaking as a soil-water mixture, followed by ultrasonic treatment. Organo-mineral particle size fractions were separated by sieving and by sedimentation.

Generally, concentration of C and N in the fractions decreased with increasing particle size. However, when expressed as weight of C per fraction maximum contents were in the 2–10 μm range. With N, maximum contents occurred about 2 μm. Largest differences in C and N contents between soils were found in the 0·2–20 μm size range.

Identification of the source of the materials in the various fractions was attempted by interpretation of the C/N ratios, but was generally inconclusive.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 98 , Issue 2 , April 1982 , pp. 335 - 342
Copyright
Copyright © Cambridge University Press 1982

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References

REFERENCES

Adams, T. McM. (1980). Macro organic matter content of some Northern Ireland soils. Record of Agricultural Research (Department of Agriculture, Northern Ireland) 28, 1–11.Google Scholar
Adams, T. McM. & Laughlin, R. J. (1981). The effects of agronomy on the carbon and nitrogen contained in the soil biomass. Journal of Agricultural Science, Cambridge 97, 319–327.CrossRefGoogle Scholar
Chichester, F. W. (1969). Nitrogen in soil organomineral sedimentation fractions. Soil Science 107, 356–363.CrossRefGoogle Scholar
Jackson, M. L. (1956). Soil Chemical Analysis – Advanced Course. Madison: University of Wisconsin.Google Scholar
McAllister, J. S. V. & McConaghy, S. (1968). Soils of Northern Ireland and their influence upon agriculture. Record of Agricultural Research (Department of Agriculture, Northern Ireland) 17, 101–105.Google Scholar
Ministry of Agriculture, Fisheries and Food (1973). Analysis of agricultural materials. Technical Bulletin 27. London: H.M.S.O.Google Scholar
North, P. F. (1976). Towards an absolute measurement of soil structure using ultrasound. Journal of Soil Science 27, 451–459.CrossRefGoogle Scholar
Turchenek, L. W. & Oades, J. M. (1978). Organ-mineral particles in soils. In Modification of Soil Structure (ed. Emerson, W. W., Bond, R. D. and Dexter, A. R.), pp. 137–144. Chichester: Wiley.Google Scholar
Turchenek, L. W. & Oades, J. M. (1979). Fractionation of organo-mineral complexes by sedimentation and density techniques. Geoderma 21, 311–343.CrossRefGoogle Scholar
Young, J. L. & Spycher, G. (1979). Water dispersible soil organic-mineral particles. Soil Science Society of Americal Journal 43, 324–328.CrossRefGoogle Scholar