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Some effects of rate of application of nitrogenous fertilizer to wheat grown continuously compared with wheat in a four-course rotation

Published online by Cambridge University Press:  27 March 2009

W. J. Ridgman
Affiliation:
Department of Applied Biology, University of Cambridge
D. E. Walters
Affiliation:
Agricultural and Food Research Council Statistics Group, Pembroke Street, Cambridge, CB2 3DX
R. B. Wedgwood
Affiliation:
Department of Applied Biology, University of Cambridge
U. Müller-Wilmes
Affiliation:
Institut für Pflanzenbau und Pflanzenzuchtung der Universität Giessen, Ludwigstrasse 23, D-6300 Giessen, West Germany

Summary

An experiment comparing continuous winter wheat with the two wheat crops in a rotation of beans, oats, wheat, wheat, with four rates of application of N fertilizer, is described and the results discussed.

The wheat following wheat in the rotation consistently outyielded the wheat following oats, but the continuous wheat yielded on average less. Response to N fertilizer was not affected by sequence of cropping and since there was practically no response to the highest increment of N, it is clear that additional N could not have brought the yield of the continuous wheat up to the level of the wheat in rotation.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1985

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References

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