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Use of Principal Component Analysis on Data from Chemical Analysis of Tea Leaves

Published online by Cambridge University Press:  03 October 2008

K. C. Willson  and
G. H. Freeman
K. C. Willson
Affiliation:
Tea Research Institute of East Africa, Kericho, Kenya*
G. H. Freeman
Affiliation:
East African Agriculture and Forestry Research Organization, Nairobi, Kenya†
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Summary

Univariate analyses of variance of mineral nutrient contents of samples of first and third leaves from seven fertilizer experiments in East Africa gave only limited information. Principal component analyses were then carried out on the nutrient contents of the third leaves. The most important component represented a balance between nitrogen and the basic nutrients potassium, calcium and magnesium, the variation of which was often related to yield. The results suggest that yield responses are likely to follow fertilizer applications only when the ratio of nitrogen to basic nutrients is within a defined range.

Type
Research Article
Information
Experimental Agriculture , Volume 6 , Issue 4 , October 1970 , pp. 319 - 325
Copyright
Copyright © Cambridge University Press 1970

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References

REFERENCES

Chenery, E. M. (1962). Rep. Tea Rep. Inst. E. Afr. 1961, 24.Google Scholar
Holland, D. A. (1968). Expl Agric. 4, 179.Google Scholar
Jeffers, J. N. R. (1962). Statistician, London, 12, 230.CrossRefGoogle Scholar
Kendall, M. G. (1957). A Course in Multivariate Analysis. London: Griffin.Google Scholar
Moore, C. S. (1965). J. Hort. Sci. 40, 133.Google Scholar
Willson, K. C. (1969). Ph.D. thesis of the University of Reading.Google Scholar