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Graphical assessment of intercropping methods

Published online by Cambridge University Press:  27 March 2009

S. C. Pearce  and
B. Gilliver
S. C. Pearce
Affiliation:
Mathematical Institute, University of Kent at Canterbury, England
B. Gilliver
Affiliation:
International Institute of Tropical Agriculture, Ibadan, Nigeria
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Summary

When experiments are conducted on two crops in association significance tests are available for judging whether treatments are having different effects or not. If, however, differences are established, it becomes necessary to assess the various treatments in agronomic, dietetic or economic terms. Graphical methods are here advanced to aid such assessment, special attention being given to (a) the stability of recommendations when the monetary or other values of the two crops change from season to season, (b) the measurement of yield advantage of mixtures over pure stands, and (c) the maximization of yield when it is desired to produce the two crops in specified proportions. The relationship to competition experiments is discussed.

Information

Type
Research Article
Information
The Journal of Agricultural Science , Volume 93 , Issue 1 , August 1979 , pp. 51 - 58
Copyright
Copyright © Cambridge University Press 1979

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References

Anon. (1972). Multiple cropping. Annual Report of the International Rice Research Institute, Los Banos, Philippines, for 1972, pp. 21–34.Google Scholar
De Wit, C. T. (1960). On competition. Verslagen van Landbouwkundige Onderzoekingen 66·8, Wageningen, Netherlands.Google Scholar
Osiru, D. S. O. & Willey, R. W. (1972). Studies on mixtures of dwarf sorghum and beans (Phaeolus vulgaris) with particular reference to plant population. Journal of Agricultural Science, Cambridge 79, 531–540.CrossRefGoogle Scholar
Pearce, S. C. & Gilliver, B. (1978). The statistical analysis of data from intercropping experiments. Journal of Agricultural Science, Cambridge 91, 625–632.CrossRefGoogle Scholar
Rao, C. R. (1952). Advanced Statistical Methods in Biometric Research. New York: John Wiley & Sons, Inc.Google Scholar
Trenbath, B. R. (1974). Biomass productivity of mixtures. Advances in Agronomy 26, 177–210.CrossRefGoogle Scholar
Willey, R. W. & Osiru, D. S. O. (1972). Studies on mixtures of maize and beans (Phaseolus vulgaris) with particular reference to plant population. Journal of Agricultural Science, Cambridge 79, 517–529.CrossRefGoogle Scholar