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Performance in Mixed Swards of Three Perennial Ryegrass and Three White Clover Varieties at Two Nitrogen Levels

K. Hoen
Irish Journal of Agricultural Research
Vol. 9, No. 2 (Aug., 1970), pp. 215-223
Stable URL: http://www.jstor.org/stable/25619629
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Performance in Mixed Swards of Three Perennial Ryegrass and Three White Clover Varieties at Two Nitrogen Levels
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Abstract

All combinations of Oriel, S.321 and Sceempter (pasture) perennial ryegrass with Blanca, S.100 and S.184 white clover varieties were evaluated in cut mixed swards over a 2-year period. Large differences in seasonal growth were observed, but total annual yields were almost similar for all mixtures. Nitrogen suppressed the clover content of the swards, but not enough to outweight the increase in yield of 3,000 kg dry matter per ha in the year after sowing. Blanca maintained a much higher clover content in the swards than did the other white clover varieties. Sceempter perennial ryegrass suppressed clover more strongly than did either Oriel or S.321. There were no grass × clover varietal interactions.

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