The effects of rates of nitrogen application on seven perennial ryegrass varieties |
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| Authors: | G R LEE L H DAVIES E R ARMITAGE A E M HOOD |
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| Institution: | Jealoit's Hill Research Station, Bracknell |
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| Abstract: | The dry matter and crude protein production of the perennial ryegrass varieties S24, S23, Premo, Houba, Barlenna, Melle and Sceempter Pasture at annual nitrogen application rates of 212, 425, 637 and 1062 kg ha?1 were studied for the years 1972–74 inclusive. The DM and CP response curves for the variety Melle were steeper than those for other varieties tested and levelled off at a higher N application rate. The results suggest that Melle is a variety with a genotype capahle of utilizing N more efficiently at higher rates than the other varieties tested. |
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