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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

Blaser, R. E. & Brady, N. C. (1950). Nutrient competition in plant associations. Agron. J. 42, 128.CrossRefGoogle Scholar
Castle, M. E. & Holmes, W. (1960). The intensive production of herbage for crop drying. VII. The effect of further continued massive applications of nitrogen with and without phosphate and potash on the yield of grassland herbage. J. agric. Sci., Camb. 55, 251.CrossRefGoogle Scholar
Gething, P. A. (1963). The effects of nitrogen, phosphate and potash on yields of herbage cut for conservation. Proc. 1st Regional Conf. int. Potash Inst. Wexford (Ireland).Google Scholar
Murphy, W. E. (1960). Ecological changes induced in moorland pastures by different fertilizer treatments. Proc. 8th int. Grassld Congr.p. 86.Google Scholar
Reith, J. W. S., Inkson, R. H. E. et al. (1961). The effects of fertilizers on herbage production. I. The effect of nitrogen, phosphate and potash on yield. J. agric. Sci., Camb. 56, 17.CrossRefGoogle Scholar
Reith, J. W. S., Inkson, R. H. E. (1964). The effects of fertilizers on herbage production. II. The effect of nitrogen, phosphate and potash on botanical and chemical composition. J. agric. Sci., Camb. 63, 209.CrossRefGoogle Scholar
Widdowson, F. V., Penny, A. & Williams, R. J. B. (1966). An experiment measuring effects of N, P and K fertilizers on yield and N, P and K contents of grazed grass. J. agric. Sci., Camb. 67, 121.CrossRefGoogle Scholar