Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-04T19:50:05.631Z Has data issue: false hasContentIssue false
  • English
  • Français

Confidence Limits for Seasonal Rainfall: Their Value in Kenya Agriculture

Published online by Cambridge University Press:  03 October 2008

T. Woodhead
T. Woodhead
Affiliation:
East African Agriculture and Forestry Research Organization, Muguga, Kenya
Get access Rights & Permissions [Opens in a new window]

Summary

For Muguga, in Kenya, confidence limits of expected ‘twenty-day’ rainfall may be reliably derived through a logarithmic transformation of the skew rainfall data. Frequency distributions of rainfall totals received during specific crop-growing seasons are examined for three widely separated Kenya sites. It is shown that confidence limits for such seasonal rainfall cannot be obtained by summation of the corresponding limits for the successive twenty-day intervals included within the season. Twenty-day limits should not therefore be accumulated in seasonal comparisons of crop water requirements and precipitation. Such assessments of agricultural site potential must take account of the year-to-year variability of precipitation, but are best undertaken with actual rainfall amounts.

Type
Research Article
Information
Experimental Agriculture , Volume 6 , Issue 2 , April 1970 , pp. 81 - 86
Copyright
Copyright © Cambridge University Press 1970

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

Dagg, M. (1965). E. Afr. agric. For. J. 30, 295.Google Scholar
Fisher, R. A. (1954). Statistical Methods for Research Workers. London: Oliver and Boyd.Google Scholar
Griffiths, J. F. (1958). An initial investigation of the annual rainfall in East Africa. E. Afr. Met. Dept. Memoirs 3, 5.Google Scholar
Griffiths, J. F. (1960). In Tropical Meteorology in Africa (Ed. Bargman, D. J.). Nairobi: Munitalp Foundation.Google Scholar
Manning, H. L. (1950). J. agric. Sci. 40, 169.CrossRefGoogle Scholar
Manning, H. L. (1956). Proc. Roy. Soc. B 144, 460.Google Scholar
Manning, H. L. (1960). In Tropical Meteorology in Africa (Ed. Bargman, D. J.). Nairobi: Munitalp Foundation.Google Scholar
Walker, J. T. & Rijks, D. A. (1967). Expl Agric. 3, 337.CrossRefGoogle Scholar
Woodhead, T. (1968). Studies of Potential Evaporation in Kenya. Nairobi: Government of Kenya.Google Scholar
Woodhead, T. (1970). J. appl. Ecol.Google Scholar
Woodhead, T. & Waweru, E. S. (1970). Expl Agric. 6, 51.CrossRefGoogle Scholar