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A comparison of growing wheat continuously with growing wheat in a four-course rotation

Published online by Cambridge University Press:  27 March 2009

W. J. Ridgman  and
D. E. Walters
W. J. Ridgman
Affiliation:
Department of Applied Biology, University of Cambridge
D. E. Walters
Affiliation:
Agricultural Research Council Statistics Group, Pembroke Street, Cambridge, CB2 3DX
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Summary

The design and analysis of an experiment to compare the yield of wheat grown continuously with that of wheat grown in two phases of a four-course rotation is described and the results discussed. A method of analysis which avoids making assumptions about the covariance structure of the errors derived from repeated observations on the same plots, which could be appropriate to other sorts of rotation experiments, is given.

There were no differences between yields of the first and second wheat crops which followed oats after beans in a four-course rotation, but the average of these two crops was 0·75 t/ha greater than the yield of wheat grown continuously. The response to N was the same in the two systems of cropping. The only yield component affected by the system of cropping was grain mass.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 99 , Issue 1 , August 1982 , pp. 139 - 143
Copyright
Copyright © Cambridge University Press 1982

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References

REFERENCES

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