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Evaluation of phosphorus in savannah soils of western Nigeria under bush fallow systems

Published online by Cambridge University Press:  27 March 2009

O. J. Ayodele  and
A. A. Agboola
O. J. Ayodele
Affiliation:
Department of Agronomy, University of Ibadan, Nigeria
A. A. Agboola
Affiliation:
Department of Agronomy, University of Ibadan, Nigeria
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Summary

Yield calibration of soil tests in western Nigeria savannah has been difficult owing to low response to P and response to only low P rates despite low available P in the soils. A study on the distribution of P forms in 60 surface soils of the savannah derived from igneous and metamorphic rocks and grouped into 11 classes was made. Average total P was 0·018% and organic P, which varied between 44 and 114 mg/kg, constituted 41% of total P. Active P components made up 40% of total inorganic P, the bulk of which was in the Fe-P fraction. All P forms except non-extractable P correlated significantly with organic matter.

The amounts of P needed to increase available P by 1 mg/kg in the soils, an index of P fixation, was correlated with pH and the free oxides of Fe and Al. The direct role of Fe-oxides and probable indirect effect of organic matter were indicated by regression analysis.

There was minimal maize yield response to P application and this was obtained only at low P rates from which an optimum rate of 20 kg P/ha was suggested. An attempt to use phosphorus sorption capacity (PSC) for P recommendation was not successful probably because of the low PSC values. A quick P recommendation based on available P status, fertilizer factor of 3·0 mg/1 and an optimum available P level derived from the relative yield v. soil P calibration curve was therefore suggested.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 101 , Issue 2 , October 1983 , pp. 283 - 289
Copyright
Copyright © Cambridge University Press 1983

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References

Ayodele, O. & Agboola, A. (1981a). The relationship between NaHCO3(Bray's P1, New Mehlich and NH4F.HF extraotants for P in savannah soils of western Nigeria. Fertilizer Research 2, 89–99.CrossRefGoogle Scholar
Ayodele, O. & Agboola, A. (1981b). Evaluation of phosphorous fixation capacity of tropical savannah soils of western Nigeria. Soil Science Society of America Journal 45, 462–464.CrossRefGoogle Scholar
Bray, R. H. (1958). The correlation of P soil test with the response of wheat through a modified Mitscherlich equation. Proceedings of the Soil Science Society of America 22, 314–317.CrossRefGoogle Scholar
Chang, S. C. & Jackson, M. L. (1957). Fractionation of soil phosphorus. Soil Science 84, 133–144.CrossRefGoogle Scholar
Enwezor, W. O. (1967). Soil drying and organic matter decomposition. Plant and Soil 26, 269–276.CrossRefGoogle Scholar
Enwezor, W. O. & Moore, A. W. (1966). Phosphorus status of Nigerian soils. Soil Science 102, 322–328.CrossRefGoogle Scholar
Fares, F., Fardeau, J. C. & Jacquin, F. (1974). Quantitative survey of organic phosphorus in different soil types. Phosphorus in Agriculture 63, 25–40.Google Scholar
Jones, M. J. & Wild, A. (1975). Soils of the West African savannah. Commonwealth Bureau of Soils Technical Communication 55. Harpenden. England.Google Scholar
Juo, A. S. R. & Ellis, B. G. (1968). Chemical and physical properties of Al and Fe phosphorus and their relation to phosphates availability. Proceedings of the Soil Science Society of America 32, 216–221.CrossRefGoogle Scholar
Juo, A. S. R. & Fox, R. L. (1977). Phosphorus sorption characteristics of some benchmark soils of West Africa. Soil Science 124, 370–376.CrossRefGoogle Scholar
Kurtz, L. T. (1953). Inorganic phosphorus in acid and neutral soils. In Soil and Fertilizer Phosphorus (ed. Pierre, W. H. and Norman, A. G.). American Society of Agronomy Monograph 4, pp. 59–88.Google Scholar
Merha, O. P. & Jackson, M. L. (1960). Iron oxide removal from soils and clays by dithionite-citrate system buffered with sodium bicarbonate. Clays and Clay Minerals 7, 317–327.Google Scholar
Murphy, J. & Riley, J. P. (1962). A modified single solution method for the determination of P in natural waters. Analytical Chimica Ada 27, 31–36.CrossRefGoogle Scholar
Osiname, O. A. (1979). Maize response to phosphorus fertilization in different ecological zones of Western Nigeria. Nigerian Journal of Agricultural Science 1, 9–13.Google Scholar
Sanchez, P. A. (1976). Properties and Management of Soils in the Tropics. New York: John Wiley and Sons.Google Scholar
Syers, J. K., Williams, J. D. H., Campbell, A. S. & Walker, T. W. (1968). The significance of apatite inclusions in soil phosphorus studies. Proceedings of the Soil Science Society of America 31, 752–756.CrossRefGoogle Scholar
Tisdale, S. L. & Nelson, W. L. (1970). Soil Fertility and Fertilizers, 2nd edn.New York: Collier-Macmillan.Google Scholar
Udo, E. J. & Ogunwale, J. A. (1977). Phosphorus fractions in selected Nigerian soils. Soil Science Society of America Journal 41, 1141–1146.CrossRefGoogle Scholar
Weaver, L., Fox, R. L. & Drosdoff, M. (1975). Inorganic and organic P occurrence in some highly weathered soils of Puerto Rico. Tropical Agriculture (Trinidad) 52, 119–130.Google Scholar