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Permanent link (DOI): https://doi.org/10.7939/R3610W343

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Recovery of Legumes in Northern Temperate Pastures Following the Application of Broadleaf Herbicides Open Access

Descriptions

Other title
Subject/Keyword
Pasture
Herbicide
Legumes
Range
Alfalfa
Clover
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Miller, Amanda J
Supervisor and department
Hall, Linda (Agricultural, Food and Nutritional Sciences)
Bork, Edward (Agricultural, Food and Nutritional Sciences)
Examining committee member and department
Hernandez Ramirez, Guillermo (Renewable Resources)
Department
Department of Agricultural, Food, and Nutritional Science
Specialization
Rangeland and Wildlife Resources
Date accepted
2013-07-08T13:09:47Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
Field and greenhouse trials were conducted to assess the breakdown of soil residues of two broadleaf herbicide bioactives, aminopyralid and aminocyclopyrachlor, as well as associated legume reestablishment/recovery and pasture sward production dynamics. Greenhouse trials indicated legume seedling germination and emergence was unaffected 15 months-after-treatment (MAT), while field trials showed recovery 24 MAT. Short-term variable dose trials suggest that herbicide rates below recommended rates will not allow legume reestablishment during the growing season of application. Herbicide bioactives were functionally indistinguishable, and legume species of interest, alfalfa (Medicago sativa L.) and white clover (Trifolium repens L.), had similar responses to herbicide application. The effects of mowing on legume recovery were dependent on legume identity, with increased density of clover, and neutral effects on alfalfa. Total forage production was unaffected by herbicide application, with increases in biomass noted over the length of the study. Recovery of weedy species (dandelion) was similar to that of legumes, at 22 MAT.
Language
English
DOI
doi:10.7939/R3610W343
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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2014-04-24T22:53:35.120+00:00
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File format: pdf (Portable Document Format)
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File size: 1521451
Last modified: 2015:10:18 01:39:41-06:00
Filename: Miller_Amanda_Fall2013.pdf
Original checksum: cb94c2c3eb848f560224e2a17e9ba3e1
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File author: Miller, Amanda
Page count: 190
File language: en-CA
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