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The residual effect of pasture cobalt applications on some soils in South East Scotland

Published online by Cambridge University Press:  27 March 2009

C. G. Mackenzie
Affiliation:
East of Scotland College of Agriculture, West Mains Road, Edinburgh, EH9 3JG

Extract

There are extensive areas in Scotland and other parts of Britain where, because of low soil cobalt status, the cobalt concentration of pasture herbage is below the 0–1 /fg/g D.M. regarded as the requirement for grazing ruminants (Agricultural Research Council, 1965). A common method of overcoming the effects of cobalt deficiency in livestock occurring within these areas is to apply cobalt sulphate to the pasture. Following work carried out by Stewart, Mitchell & Stewart (1941, 1942) and Stewart etal.(1946) the standard recommended application of cobalt sulphate for pasture has remained at 2 kg/ha for many years, an application generally expected to last for 3–5 years. However, in South East Scotland there are doubts about the adequacy of such treatment which has led to a reappraisal. Significant increases in uptake of cobalt by herbage following applications to land at this rate are not always observed and sometimes there is no appreciable increase in ‘available’ soil cobalt as determined by acetic acid extraction.

Type
Short Note
Copyright
Copyright © Cambridge University Press 1979

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References

Adams, S. N., Honeysett, J. L., Tilleb, K. G. & Nourish, K. (1969). Factors controlling the increase of cobalt in plants following the addition of a cobalt fertiliser. Australian Journal of Soil Research, 7 2942.CrossRefGoogle Scholar
Agricultural Research Cotjncil, London (1965). The Nutrient Requirements of Farm Livestock;No. 2, Ruminants. London: A.R.C.Google Scholar
De Endkedy, A. S. (1963). Estimation of free oxides in soils and clays by a photolytic method. Clay Minerals Bulletin 5, 209217.CrossRefGoogle Scholar
Poole, D. B. R., Moore, L., Finch, T. F., Gabdineb, M. J. & Fleming, G. A. (1974). An unexpected occurrence of cobalt pine in lambs in North Leinster. Irish Journal of Agricultural Research 13, 119122.Google Scholar
Stewakt, J., Mitchell, R. L. & Stewabt, A. B. (1941). Pining in sheep: its control by administration of cobalt and by use of cobalt-rich fertilizers. Empire Journal of Experimental Agriculture 9, 145152.Google Scholar
Stewart, J., Mitchell, R. L. & Stewabt, A. B. (1942). Pining in sheep: confirmatory experiments on its control by use of cobalt-rich fertilizers. Empire Journal of Experimental Agriculture 10, 5760.Google Scholar
Stewart, J., Mitchell, R. L., Stewart, A. B. & Young, H. M. (1946). Solway pine: a marasmic condition in lambs in certain districts of Kirkcudbrightshire. Empire Journal of Experimental Agriculture 14, 145152.Google Scholar
Tinsley, J. (1950). The determination of organic carbon in soils by dichromate mixtures. Transactions 4th International Congress of Soil Science 1, 161164.Google Scholar