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Long-term effects of fertilizers on herbage production: I. Yields and botanical composition

Published online by Cambridge University Press:  27 March 2009

R. G. Heddle
R. G. Heddle
Affiliation:
The Edinburgh School of Agriculture, West Mains Road, Edinburgh
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Extract

In a factorial experiment on a mixed grass/clover sward, continued over 13 years, D.M. yields were strongly affected by N and K, which showed a marked interaction. P had very little effect on yield. There was evidence of a depressing effect on yield of continued application of KC1 at low rates of N input: this is thought to be due to excess Cl. It may be associated with the effect of Cl on clover growth, since it did not occur in predominantly grassy swards heavily dressed with N, in spite of high Cl content in the herbage.

The botanical composition of the herbage was strongly affected by the fertilizer treatments.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 69 , Issue 3 , December 1967 , pp. 425 - 431
Copyright
Copyright © Cambridge University Press 1967

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References

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