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Irrigation of grassland

Published online by Cambridge University Press:  27 March 2009

A. J. Low  and
E. R. Armitage
A. J. Low
Affiliation:
Imperial Chemical Industries Limited, Jealott's Hill Research Station, Bracknell, Berks
E. R. Armitage
Affiliation:
Imperial Chemical Industries Limited, Jealott's Hill Research Station, Bracknell, Berks
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Extract

Field experiments are described comparing the yield of herbage on a series of grass-clover plots which were irrigated after various deficits had developed. In addition to the irrigation treatments, different rates of nitrogen were applied.

The maximum yields were obtained when only small deficits were allowed (maximum pF 3·3). This applied particularly to grass-clover swards to which no nitrogen fertilizer was applied.

There was not much reduction in yield on predominantly perennial ryegrass swards liberally supplied with nitrogen when larger deficits were allowed to develop (pF c. 4·0).

Estimates of soil water deficit from meteorological data using Penman's method agreed very well with direct measurements.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 52 , Issue 2 , April 1959 , pp. 256 - 262
Copyright
Copyright © Cambridge University Press 1959

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References

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