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The relationship between nitrogen supply and the nitrogen yield of cut grass swards

Published online by Cambridge University Press:  27 March 2009

I. R. Richards  and
R. D. Hobson
I. R. Richards
Affiliation:
Fisona Limited, Fertilizer Division, North Wyke Experimental Station, Okehampton, Devon
R. D. Hobson
Affiliation:
Fisons Limited, Fertilizer Division, Levington Research Station, Ipswich, Suffolk
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Summary

Using data from 140 experiments conducted at sites throughout England and Wales, a relationship between nitrogen supply and the nitrogen yield of cut grass swards was sought. One linear and three non-linear functions were fitted to the data. The non-linear functions fitted the data slightly better than did the linear and, over the range in nitrogen supply normally found, provided consistent predictions of grass nitrogen yield. The recovery of available nitrogen in the herbage was found to decline with level of nitrogen supply from a potential maximum of 79%.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 88 , Issue 2 , April 1977 , pp. 289 - 292
Copyright
Copyright © Cambridge University Press 1977

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References

Bbockman, J. S. (1969). The relationship between total N input and yield of cut grass swards. Journal of the British Orassland Society 24, 89–97.Google Scholar
Brockman, J. S., Rope, C. M. –Stevens, M. T. (1971). A mathematical relationship between nitrogen input and output in cut grass swards. Journal of the British Grassland Society 26, 75–7.CrossRefGoogle Scholar