Hostname: page-component-77c89778f8-5wvtr Total loading time: 0 Render date: 2024-07-19T02:58:56.212Z Has data issue: false hasContentIssue false
  • English
  • Français

Timing the Application of N to Maize in Sierra Leone

Published online by Cambridge University Press:  03 October 2008

I. Haque
I. Haque
Affiliation:
Njala University College, Njala, Sierra Leone
Get access Rights & Permissions [Opens in a new window]

Summary

Two experiments were conducted on timing the application of N to maize on Njala upland soils in Sierra Leone. Application of all the N (urea) at planting or thinning gave lower leaf N values and relatively poor yields compared to split applications. Lower grain yields in the minor season might have been due to poor and inadequate rainfall. Basal application of SCU does not seem to release enough N for maximum grain yield of maize. Total N (urea) in the major and minor seasons may be phased in two splits, viz. ½ N 30 DAP + ½ N 50 DAP or ⅓ N at planting + ⅔ N 25 DAP, respectively.

Type
Research Article
Information
Experimental Agriculture , Volume 15 , Issue 3 , July 1979 , pp. 247 - 251
Copyright
Copyright © Cambridge University Press 1979

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Agboola, A. A. (1972). J. Agric. Sci., Camb. 79, 391.CrossRefGoogle Scholar
Ballaux, J. C. (1973). A. Rep. IITA, Ibadan, Nigeria.Google Scholar
Brown, P. (1966). Expl Agric. 2, 49.CrossRefGoogle Scholar
Das Gupta, D. A., Terry, E. R., Odell, R. T. & Dahniya, M. T. (1972). Circ. 5, Njala University College, Sierra Leone.Google Scholar
Dumenil, L. (1961). Proc. Soil Sci. Soc. Am. 25, 295.CrossRefGoogle Scholar
Fayemi, A. A. (1966). Expl Agric. 2, 101.CrossRefGoogle Scholar
Forde, St C. M. (1976). Trop. Agric., Trinidad 53, 273.Google Scholar
Fox, R. H. (1972). Trop. Soil Res. Seminar, Ibadan, Nigeria.Google Scholar
Gallo, J. R., Hiroce, R. & Miranda, L. T. (1968). Bragantia 27, 177.CrossRefGoogle Scholar
Haque, I. (1978). 8th Int. Colloq. Plant Analysis and Fertilizer Problems. Univ. Auckland, New Zealand.Google Scholar
Jones, M. J. (1973). Expl Agric. 9, 113.CrossRefGoogle Scholar
Nair Prabhakaran, K. P. & Singh, R. P. (1974). Expl Agric. 10, 257.CrossRefGoogle Scholar
North Carolina State University (1974, 1975). A. Rep. Soil Sci. Dept, NCSU, Raleigh, USA.sGoogle Scholar
Pawson, E. (1957). Emp. J. Expl Agric. 25, 79.Google Scholar
Tyner, E. H. (1946). Proc. Soil Sci. Soc. Am. 11, 317.CrossRefGoogle Scholar
van Vuure, W., Odell, R. T. & Sutton, P. M. (1972). Bull. 3, Njala University College, Sierra Leone.Google Scholar
Viets, F. G. JrCramford, C. L. & Nelson, C. E. (1954). Proc. Soil Sci. Soc. Am. 18, 297.CrossRefGoogle Scholar
Voss, R. E., Hanway, J. J. & Dumenil, L. C. (1970). Agron. J. 62, 726.CrossRefGoogle Scholar