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| DOI: | 10.4141/P00-021 |
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| Web URL(s): | http://pubs.aic.ca/doi/pdfplus/10.4141/P00-021
Last checked: 10/01/2015
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| Publication Type:
| Refereed |
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| Author(s): | Fairey, N. A.;
Lefkovitch, L. P. |
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| Author Affiliation: | Beaverlodge Research Farm, Agriculture and Agri-Food Canada, Beaverlodge, Alberta, Canada |
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| Title: | Effect of seeding rate on seed production of perennial ryegrass after establishment with a grain companion crop in the Peace River region of north-western Canada |
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| Section: | Agronomy section: Forage
Other records with the "Agronomy section: Forage" Section
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| Source: | Canadian Journal of Plant Science. Vol. 81, No. 2, April 2001, p. 265-271. |
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| Publishing Information: | Ottawa: Agricultural Institute of Canada |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Seeding rate; Seed production; Lolium perenne; Companion grasses; Crops; Seed yield; Seed quality; Hordeum vulgare; Tiller density; Seed weight
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| Cultivar Names: | All*Star; Barclay; Repell |
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| Abstract/Contents: | "A field study in the Peace River region of north-western Canada evaluated the effect of seeding rate on the seed yield and quality of perennial ryegrass (Lolium perenne L.) in the year after establishment with a grain companion crop. Each of two sites was sown with 70 kg ha-1 barley (Hordeum vulgare L.) and under-sown, in 30-cm rows, with three cultivars (All*Star, Barclay and Repell) of diploid perennial ryegrass at seeding rates of 150, 300, 600, 1 200, 2 400, and 4 800 viable seeds m-2. During the establishment year of the perennial ryegrass, the grain yield of the barley companion crop was comparable to commercial yields for the region. Time of seed maturity, seed yield and thousand-seed weight of perennial ryegrass were not significantly (P ≤ 0.05) affected by the seeding rate, but were by cultivar. There was a significant (P ≤ 0.01) seeding rate x cultivar interaction for fertile tiller density and specific seed weight. Seed dockage differed significantly (P ≤ 0.001) among cultivars (16.7-27.9%) and increased with seeding rate (19.8-24.2%), and the germination capacity of the harvested seed was unaffected by seeding rate or cultivar. Grass seed yield was positively associated with fertile tiller density for each cultivar (r = 0.454***, n = 72 for All*Star; r = 0.364***, n = 72 for Repell; and r = 0.719***, n = 72 for Barclay). Compared with the other cultivars, Barclay matured 13-15 d later, had the lowest density of fertile tillers (1130 m-2), the highest seed dockage (27.9%) and the lowest seed yield (345 kg ha-1). All*Star had the highest seed yield (774 kg ha-1), the lowest seed dockage (16.7%), and the highest thousand-seed weight (1.55 g). Repell was intermediate in seed yield (633 kg ha-1) but similar to All*Star, rather than Barclay, in other characteristics. The later maturity, creeping habit and prostrate stature of Barclay may have reduced its ability to produce fertile tillers and seed as efficiently as the other two cultivars at this northern latitude. In the Peace River region, there is potential for under-seeding a spring grain crop with perennial ryegrass for the production of successive harvest of grain and grass seed, provided the cultivar of perennial ryegrass is adequately adapted for seed production. The seeding rate for the perennial ryegrass is not particularly critical and 150-300 viable seeds m-2 should be adequate for diploid perennial ryegrass grown in rows with a grain companion crop." |
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| Language: | English |
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| References: | 30 |
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| Note: | Abstract also appears in French
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fairey, N. A., and L. P. Lefkovitch. 2001. Effect of seeding rate on seed production of perennial ryegrass after establishment with a grain companion crop in the Peace River region of north-western Canada. Can. J. Plant Sci. 81(2):p. 265-271. |
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| DOI: 10.4141/P00-021 |
| Web URL(s):
http://pubs.aic.ca/doi/pdfplus/10.4141/P00-021
Last checked: 10/01/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 1 .C3 |
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