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The effcts of fertilizers on herbage production. II. The effect of nitrogen, phosphorus and potassium on botanical and chemical composition

Published online by Cambridge University Press:  27 March 2009

J. W. S. Reith ,
R. H. E. Inkson ,
W. Holmes ,
D. S. Maclusky ,
D. Reid ,
R. G. Heddle  and
G. J. F. Copeman
J. W. S. Reith
Affiliation:
Macaulay Institute for Soil Research, Aberdeen
R. H. E. Inkson
Affiliation:
Macaulay Institute for Soil Research, Aberdeen
W. Holmes
Affiliation:
Hannah Dairy Research Institute, Kirkhill, Ayr
D. S. Maclusky
Affiliation:
Hannah Dairy Research Institute, Kirkhill, Ayr
D. Reid
Affiliation:
Hannah Dairy Research Institute, Kirkhill, Ayr
R. G. Heddle
Affiliation:
Edinburgh School of Agriculture
G. J. F. Copeman
Affiliation:
North of Scotland College of Agriculture, Aberdeen
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Extract

Six factorial experiments, each lasting 3 years, were carried out to determine the effects of N, P and K on herbage cut five times each year.

Clover almost disappeared with the 87 lb. N treatment and none survived with the 174and 348 lb. dressings. N increased the proportions of rye-grass and cocksfoot in the sward. P had no influence on botanical composition. K usually increased the clover content in the absence of, but had practically no effect in the presence of, N.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 63 , Issue 2 , October 1964 , pp. 209 - 219
Copyright
Copyright © Cambridge University Press 1964

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