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Mineralization of Soil Nitrogen at a Savanna Site in Nigeria

Published online by Cambridge University Press:  03 October 2008

A. Wild
Affiliation:
Department of Soil Science, The University, Reading

Summary

The mineral N (NH4 + NO8) in soils at a savanna site was low at the time of crop planting except after groundnuts and when dung had been used. Nitrification occurred whatever the previous crop, but the numbers of nitrifying bacteria were small and varied with the level of substrate ammonium.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1972

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References

REFERENCES

Alexander, M. (1965). In Soil Nitrogen (Ed. Bartholomew, W. V. & Clark, F. E.). Madison. Wisconsin: Amer. Soc. Agron.Google Scholar
Alexander, M. & Clark, F. E. (1965). In Methods of Soil Analysis (Ed. Black, C. A.). Madison. Wisconsin: Amer. Soc. Agron.Google Scholar
Anon. (1967). Inst. Agric. Res. Samaru Ann. Rept 19661967, 57, Ahmadu Bello University, Zaria, Nigeria.Google Scholar
Bache, B. W. & Heathcote, R. G. (1969). Expl Agric. 5, 241.CrossRefGoogle Scholar
Bremner, J. M. (1965a). In Methods of Soil Analysis (Ed. Black, C. A.) p. 1162. Madison, Wisconsin: Amer. Soc. Agron.Google Scholar
Bremner, J. M. (1965b). In Methods of Soil Analysis (Ed. Black, C. A.) p. 1192. Madison, Wisconsin: Amer. Soc. Agron.Google Scholar
Dennison, E. B. (1959). Trop. Agric. 36, 171.Google Scholar
Dennison, E. B. (1961). Emp. J. exp. Agric. 29, 330.Google Scholar
Dommergues, Y. & Mangenot, F. (1970). Ecologie Microbienne du Sol. Paris: Masson et Cie.Google Scholar
Dransfield, M. & McDonald, D. (1966). Nigerian Agric. J. 3, 42.Google Scholar
Hartley, K. T. (1937). Emp. J. exp. Agric. 5, 254.Google Scholar
Heathcote, R. G. (1969). Expl Agric. 6, 229.CrossRefGoogle Scholar
Heathcote, R. G. & Stockinger, K. R. (1970). Expl Agric. 6, 345.CrossRefGoogle Scholar
Higgins, G. M. (1963). Upland Soils of the Samaru and Kano Areas. Soil Survey Rep., Inst. Agric. Res. Samaru, Nigeria.Google Scholar
Jones, M. J. (1971). J. agric. Sci., 77, 473.CrossRefGoogle Scholar
Keay, R. W. J. (1959). An Outline of Nigerian Vegetation. Federal Government Printer, Lagos.Google Scholar
Kowal, J. (1968). Nigerian Agric. J. 5, 13.Google Scholar
Lawes, D. A. (1965). Samaru Misc. Paper 5, Inst. Agric. Res., Samaru, Nigeria.Google Scholar
Meiklejohn, J. (1962). Emp.J. exp. Agric. 30, 115.Google Scholar
Meiklejohn, J. (1968). J. appl. Ecol. 5, 291.CrossRefGoogle Scholar
Odu, C. T. I. & Adeoye, K. B. (1970). Soil Biol. Biochem. 2, 41.CrossRefGoogle Scholar
Robinson, J. B. D. (1957). J. agric. Sci. 49, 100.CrossRefGoogle Scholar
Sims, C. M. & Collins, F. M. (1960). Aust. J. agric. Res. 11, 505.CrossRefGoogle Scholar
Walter, M. W. (1967). Samaru Misc. Paper 15, Inst. Agric. Res., Samaru, Zaria, Nigeria.Google Scholar
Watson, K. A. & Goldsworthy, P. R. (1964). Emp. J. exp. Agric. 32, 290.Google Scholar
Wild, A. (1972). J. Soil Sci. (in press).Google Scholar