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The effects of rates and time of application of nitrogenous fertilizer on barley in south-east Scotland

Published online by Cambridge University Press:  27 March 2009

J. C. Holmes ,
W. D. Gill  and
J. A. B. Rodger
J. C. Holmes
Affiliation:
The Edinburgh School of Agriculture
W. D. Gill
Affiliation:
The Edinburgh School of Agriculture
J. A. B. Rodger
Affiliation:
The Edinburgh School of Agriculture
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Extract

1. Two series of simple nitrogen manuring trials, one on level of sulphate of ammonia applied to the seedbed at twenty-two centres and the other on the time of top dressing with ‘Nitro-Chalk’ at nineteen centres, were conducted on commercial farms in south-east Scotland during 1954 to 1957.

2. The optimum level of sulphate of ammonia varied with season and farm type. The optimum dressing was at least 0·9 cwt. N/acre in the dry season of 1955, and in the other years was estimated to be 0·9 cwt. N/acre on arable farms and about 0·-25–0·4 cwt. on ley rotation farms when the barley did not follow sheeped turnips. In the latter event no fertilizer was best.

3. The nitrogen content of the grain increased little until after the 1 cwt. sulphate of ammonia level, although the optimum yield was not obtained in many experiments without some rise in the grain nitrogen content.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 54 , Issue 3 , June 1960 , pp. 291 - 299
Copyright
Copyright © Cambridge University Press 1960

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References

REFERENCES

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