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Permanent link (DOI): https://doi.org/10.7939/R3PS4H

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Legume-grass forage mixes for maximizing yield and competitiveness against weeds in early establishment Open Access

Descriptions

Other title
Subject/Keyword
clover
competition
overyielding
alfalfa
Canada thistle
yield
Legume
Cirsium arvense
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Gabruck, Danielle
Supervisor and department
Bork, Edward (Agriculture, Food and Nutritional Science)
Examining committee member and department
Cahill, J.C. (Biological Science)
King, Jane (Agriculture, Food and Nutritional Science)
Hall, Linda (Agriculture, Food and Nutritional Science)
Department
Department of Agricultural, Food, and Nutritional Science
Specialization

Date accepted
2010-01-11T17:21:08Z
Graduation date
2010-06
Degree
Master of Science
Degree level
Master's
Abstract
A field experiment from 2003 to 2005 at two sites examined the impacts of forage species and legume proportion on forage sward production. Grasses generally established rapidly and out-yielded swards high in legume content, although legumes did improve forage quality. Alfalfa was retained at greater relative biomass in mixed swards than swards containing clover. Legume persistence also varied depending on neighbouring grass species. A greenhouse study examined competitive interactions between Canada thistle (a common pasture weed), white clover and Kentucky bluegrass during establishment. Although thistle was most susceptible to intra-specific competition, and strongly affected forage yield, the latter also influenced weed biomass. Competitiveness of forages depended directly on soil medium, emphasizing the importance of abiotic factors on vegetation dynamics in mixed swards.
Language
English
DOI
doi:10.7939/R3PS4H
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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