Abstract
Nitrogen (N) fertilizer was broadcast applied at rates of 0, 25, 50, 75 and 100 kg N ha−1 to annual canarygrass (Phalaris canariensis L.) in a field experiment at Indian Head, Saskatchewan each year from 1978 to 1983. Nitrogen fertilizer applied at seeding had no effect on days from seeding to emergence, heading or maturity or on 1000-seed weight. Nitrogen had a positive linear effect on seed N content and a negative linear effect on test weight in all years. There were positive linear and quadratic effects of applied N on seed yields, suggesting a maximum yield in the range of 50 – 75 kg ha−1 added N. Nitrogen content of the caryopsis was increased with N fertilizer applied at seeding, but total amino acid concentrations (per mg N) in the hydrolyzed proteins were not affected. The amino acid profile of the caryopsis was similar to that of other cereals and the N-to-protein factor was 5.5.Key words: Annual canarygrass, Phalaris canariensis, nitrogen fertilizer, agronomic performance
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