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- W2043575932 abstract "Dry matter yield of smooth bromegrass (Bromus inermis Leyss.) - alfalfa (Medicago sativa L.) mixtures is restricted by short growing seasons and poor legume persistence in the Aspen Parklands of western Canada. Meadow bromegrass (Bromus riparius Rehm.) has recently gained acceptance, but comparative information on smooth and meadow bromegrass in grass-alfalfa mixtures is unavailable. We examined DM yield of binary grass-legume mixtures containing either Carlton or Manchar smooth bromegrass or Regar meadow bromegrass with Peace or Beaver alfalfa under a two-cut hay-management system at four sites in central Alberta for 3 yr. Annual DM yield was 40% greater (P ≤ 0.0001) at sites near Lacombe (7570 kg ha −1 ) than at Bluffton and Vegreville (5420 kg ha −1 ). Dry matter yield of smooth bromegrass mixtures (8020 kg ha −1 ) was 20% higher (P ≤ 0.01) than that of meadow bromegrass mixtures (6690 kg ha −1 ) near Lacombe. Alfalfa DM yield was 2.1 times higher at Bluffton and Vegreville (2770 kg ha −1 ) than near Lacombe (1300 kg ha −1 ). Near Lacombe, alfalfa regrowth was suppressed (P ≤ 0.0001) by smooth bromegrass, which had 2.3 times larger (P < 0.001) tillers than meadow bromegrass at first cut. At Bluffton and Vegreville, DM yield of meadow bromegrass mixtures equalled or exceeded (P ≤ 0.05) that of smooth bromegrass mixtures. Although first-cut tiller weight of smooth bromegrass was 73% more (P ≤ 0.0001) than that of meadow bromegrass at Bluffton and Vegreville, tiller density of meadow bromegrass was 1.7 times greater (P ≤ 0.0001) than that of smooth bromegrass. Results indicate that smooth bromegrass mixtures were superior to meadow bromegrass mixtures for hay production at moist fertile locations, despite reduced alfalfa persistence. At drier or less fertile sites, however, DM yield of meadow bromegrass mixtures was higher than that of smooth bromegrass mixtures when weather conditions for regrowth were favourable. Key words: Bromegrass-alfalfa mixtures, hay, parklands" @default.
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- W2043575932 date "1995-04-01" @default.
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- W2043575932 title "Productivity and composition of bromegrass alfalfa mixtures for hay in the Aspen Parklands of western Canada" @default.
- W2043575932 doi "https://doi.org/10.4141/cjps95-071" @default.
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