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Morphological changes in a brown earth soil in response to applications of pig slurry

Published online by Cambridge University Press:  27 March 2009

J. W. Lea
Affiliation:
Experimental Husbandry Farm, Trawsgoed, Aberysltvyth, Dyfed, SY23 4HT
D. A. Gibbst
Affiliation:
Experimental Husbandry Farm, Trawsgoed, Aberysltvyth, Dyfed, SY23 4HT
N. G. Lawrence
Affiliation:
Experimental Husbandry Farm, Trawsgoed, Aberysltvyth, Dyfed, SY23 4HT

Summary

Literature dealing with disposal of farm wastes is mainly concerned with smell, heavy metal toxicity, nutrient accumulation and soil physical conditions. Soil is required to filter and absorb the solid material and release a filtrate free from pollutants while remaining relatively unaltered. The importance of soil type in reducing pollution potential is recognized but little study has been made of the effect of pollutants on soil morphology. This paper reports changes observed in a fine silty and fine loamy typical brown earth of the Rheidol series on terrace gravels after treatment with pig slurry. It is concluded that pig slurry spread at the rate of 50 m3/ha per week will cause this permeable soil to deteriorate under an average rainfall of 1117 mm/year unless rest periods are given.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1982

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References

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