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Fertility Studies on a Sandy Loam in Semi-Arid Tanzania

I. Effects of Nitrogen, Phosphorus and Potassium Fertilizers on Yields of Maize and Soil Nutrient Status

Published online by Cambridge University Press:  03 October 2008

G. D. Anderson
G. D. Anderson
Affiliation:
Ministry of Agriculture and Co-operatives, Tanzania*
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Summary

N and P fertilizers applied to maize had considerable effects over a five-year period, especially when both were given. Initial applications of 47 lb/acre/P2O5 with annual dressings of 58 lb N, produced a mean yield increase of 55 per cent above the control. K gave little response in the first three years, but thereafter became more important. 1120 lb ammonium sulphate nitrate caused striking reductions in soil pH, Ca, Mg, K, total and organic P but increases in exch. Mn and soluble P. 112 lb double superphosphate increased the total and organic P and 65 lb K2O reduced organic P. Organic carbon suffered a mean loss of 33 per cent over five years. Recommendations are made regarding P2O5, N and K on this soil.

Type
Research Article
Information
Experimental Agriculture , Volume 6 , Issue 1 , January 1970 , pp. 1 - 12
Copyright
Copyright © Cambridge University Press 1970

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References

Anderson, G. D. (1967). Tengeru Rep. 92.Google Scholar
Anderson, G. D. (In press). Expl Agric.Google Scholar
Anderson, G. D., Houston, B. G. & Northwood, P. J. (1966). Expl Agric. 2, 183.CrossRefGoogle Scholar
Birch, H. F. (1958). Pl. Soil. 10, 9.CrossRefGoogle Scholar
Birch, H. F. (1959). Pl. Soil. 11, 262.CrossRefGoogle Scholar
Bremner, J. M. (1960). I. agric Sci. 55, 11.Google Scholar
Brown, K. J. (1963). Emp. Cott. Grow. Rev. 40, 34.Google Scholar
Cochran, W. G. & Cox, G. M. (1957). Experimental Designs (2nd edit.). New York: John Wiley.Google Scholar
Dagg, M. & Macartney, J. C. (1968). Expl Agric. 4, 279.CrossRefGoogle Scholar
D'Hoore, J. (1964). Soil Map of Africa. O.A.U./S.T.R.C. Pub. 93. Lagos.Google Scholar
Doggett, H. & Jowett, D. (1966). J. agric. Sci. 67, 31.CrossRefGoogle Scholar
Dowker, B. D. (1964). E. Afr. agric. J. 30, 33.CrossRefGoogle Scholar
Drysdale, V. M. (1965). E. Afr. agric. J. 31, 189.CrossRefGoogle Scholar
Evans, A. C. (1963). E. Afr. agric. J. 28, 228 and 231.CrossRefGoogle Scholar
Fayemi, A. A. (1966). Expl Agric. 2, 101.CrossRefGoogle Scholar
Gautan, D. (1964). Nature 203, 899.Google Scholar
Gibbon, D. P. (1966). Expl Agric. 2, 173.CrossRefGoogle Scholar
Glover, J. (1953). J. agric. Sci. 43, 154 and 160.CrossRefGoogle Scholar
Lawes, D. A. (1966). Expl Agric. 2, 139.CrossRefGoogle Scholar
Le Mare, P. H. (1959). Emp. J. exp. Agric. 27, 197.Google Scholar
Loue, A. (1963). Wld Crops. 15, 373.Google Scholar
Macartney, J. C. (1965). M. Agric. Thesis, Univ. Belfast.Google Scholar
Macartney, J. C. (1966). Tengeru Rep. 77.Google Scholar
Macartney, J. C. (1967). Tengeru Rep. 99.Google Scholar
Nelson, L. B. (1965). Adv. Agron. 17, 1.CrossRefGoogle Scholar
Peat, J. E. & Brown, K. J. (1962). Emp. J. exp. Agric. 30, 215.Google Scholar
Russell, E. J. (1950). Soil Conditions & Plant Growth (8th edit.) as revised by Russell, E. W.. London: Longman.Google Scholar
Smith, A. N. (1962). E. Afr. agric. J. 28, 16.CrossRefGoogle Scholar
Sutton, C. D. & Larsen, S. (1963). Pl. Soil 18, 267.CrossRefGoogle Scholar
Tsakiris, A. (1964). Ann. Rep. South. Res. Centre, Nachingwea.Google Scholar
Turner, D. J. (1966). E. Afr. agric. J. 31, 249.CrossRefGoogle Scholar
Viets, F. G. (1962). Adv. Agron. 14, 223.CrossRefGoogle Scholar
Walker, T. W. & Adams, A. R. F. (1958). Soil Sci. 85, 307.CrossRefGoogle Scholar
Walker, T. W., Thapa, B. K. & Adams, A. R. F. (1959). Soil Sci. 87, 135.CrossRefGoogle Scholar
Walkley, A. & Black, I. A. (1934). Soil Sci. 37, 29.CrossRefGoogle Scholar
Williams, E. G. (1950). j. Soil Sci. 2, 110.CrossRefGoogle Scholar