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Annals of Botany 52: 931-934, 1983
© 1983 Annals of Botany Company

OTHER

The Influence of Frequent Defoliation and of Drought on Nitrogen and Sulphur in the Roots of Perennial Ryegrass and White Clover

D. C. WHITEHEAD

Grassland Research Institute Hurley, Maidenhead, Berks SL6 5LR, UK

Accepted: 29 July 1983   

Frequent defoliation and drought, imposed individually over a period of 60 days, both reduced substantially the root weights of white clover grown in the field, while causing no reduction in the root weights of perennial ryegrass. Concentrations of N and S in the root organic matter of the clover were reduced by between 14 and 25 per cent by both treatments, but with the ryegrass concentrations were not reduced.

Perennial ryegrass, white clover, roots, nitrogen, sulphur, defoliation, drought


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H.D. Karsten and J.W. MacAdam
Effect of Drought on Growth, Carbohydrates, and Soil Water Use by Perennial Ryegrass, Tall Fescue, and White Clover
Crop Sci., January 1, 2001; 41(1): 156 - 166.
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