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Published online by Cambridge University Press: 27 March 2009
The amount of dry matter produced and N taken up by seven grass species and varieties grown in a glasshouse were compared with perennial ryegrass (S. 23) and Italian ryegrass (S. 22) at different day-lengths and light intensities.
The ryegrasses Westerwolds, Italian (S. 22) and Perennial (S. 321) yielded more than S. 23. At the smallest light intensities, Westerwolds, Italian (S. 22) and Perennial (S. 24) (S. 321) ryegrasses and Meadow fescue (S. 215) took up more N than S. 23. Westerwolds and Perennial (S. 24) (S. 321) ryegrasses should be useful alternatives to the S. 23 or S. 22 strains as test crops in nutrient experiments in the glasshouse, especially when grown in the dim light during winter.