Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods
Abstract Japanese knotweed, Sakhalin knotweed, and their hybrid, Bohemian knotweed, are invasive across much of the United States. Monocultures formed by these species threaten natural riparian areas, and effective methods of control are being sought. Injection of herbicide is a relatively new contr...
Published in: | Invasive Plant Science and Management |
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Language: | English |
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Cambridge University Press (CUP)
2008
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Online Access: | http://dx.doi.org/10.1614/ipsm-07-013r.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1939729100000067 |
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crcambridgeupr:10.1614/ipsm-07-013r.1 2023-05-15T18:09:13+02:00 Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods Hagen, Erin N. Dunwiddie, Peter W. 2008 http://dx.doi.org/10.1614/ipsm-07-013r.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1939729100000067 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Invasive Plant Science and Management volume 1, issue 1, page 31-35 ISSN 1939-7291 1939-747X Plant Science journal-article 2008 crcambridgeupr https://doi.org/10.1614/ipsm-07-013r.1 2023-02-24T07:11:52Z Abstract Japanese knotweed, Sakhalin knotweed, and their hybrid, Bohemian knotweed, are invasive across much of the United States. Monocultures formed by these species threaten natural riparian areas, and effective methods of control are being sought. Injection of herbicide is a relatively new control technique with no known published results. Bohemian knotweed was injected with four treatment dosages: 1 ml (0.03 oz) (0.48 g ae) (0.017 oz ae), 3 ml (0.10 oz) (1.44 g ae) (0.05 oz ae), or 5 ml (0.17 oz) (2.4 g ae) (0.08 oz ae) of undiluted glyphosate (suggested application), and 5 ml (0.17 oz) of a glyphosate : water mix (1 : 1, by vol) (1.2 g ae) (0.04 oz ae). Injections were tested at two heights on the plants: low node, 0.2 m (0.66 ft) (L) or chest height node, 1.0 to 1.3 m (3.3 to 4.3 ft) (M). After 1 mo, average percent injury was greater than 90%, and analysis showed no effect of injection location on the stem and no difference between the suggested 5-ml (0.17 oz) glyphosate application and 3-ml (0.10 oz) application. Nine months after treatment there was a reduction in knotweed height and density, though vigorous regrowth was evident within plots. Although the injection method results in the short-term dieback of injected stems, drawbacks to its use in certain scenarios should be considered when developing an integrated management plan for knotweed control. Article in Journal/Newspaper Sakhalin Cambridge University Press (via Crossref) Invasive Plant Science and Management 1 1 31 35 |
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Cambridge University Press (via Crossref) |
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English |
topic |
Plant Science |
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Plant Science Hagen, Erin N. Dunwiddie, Peter W. Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods |
topic_facet |
Plant Science |
description |
Abstract Japanese knotweed, Sakhalin knotweed, and their hybrid, Bohemian knotweed, are invasive across much of the United States. Monocultures formed by these species threaten natural riparian areas, and effective methods of control are being sought. Injection of herbicide is a relatively new control technique with no known published results. Bohemian knotweed was injected with four treatment dosages: 1 ml (0.03 oz) (0.48 g ae) (0.017 oz ae), 3 ml (0.10 oz) (1.44 g ae) (0.05 oz ae), or 5 ml (0.17 oz) (2.4 g ae) (0.08 oz ae) of undiluted glyphosate (suggested application), and 5 ml (0.17 oz) of a glyphosate : water mix (1 : 1, by vol) (1.2 g ae) (0.04 oz ae). Injections were tested at two heights on the plants: low node, 0.2 m (0.66 ft) (L) or chest height node, 1.0 to 1.3 m (3.3 to 4.3 ft) (M). After 1 mo, average percent injury was greater than 90%, and analysis showed no effect of injection location on the stem and no difference between the suggested 5-ml (0.17 oz) glyphosate application and 3-ml (0.10 oz) application. Nine months after treatment there was a reduction in knotweed height and density, though vigorous regrowth was evident within plots. Although the injection method results in the short-term dieback of injected stems, drawbacks to its use in certain scenarios should be considered when developing an integrated management plan for knotweed control. |
format |
Article in Journal/Newspaper |
author |
Hagen, Erin N. Dunwiddie, Peter W. |
author_facet |
Hagen, Erin N. Dunwiddie, Peter W. |
author_sort |
Hagen, Erin N. |
title |
Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods |
title_short |
Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods |
title_full |
Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods |
title_fullStr |
Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods |
title_full_unstemmed |
Does Stem Injection of Glyphosate Control Invasive Knotweeds ( Polygonum spp.)? A Comparison of Four Methods |
title_sort |
does stem injection of glyphosate control invasive knotweeds ( polygonum spp.)? a comparison of four methods |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1614/ipsm-07-013r.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1939729100000067 |
genre |
Sakhalin |
genre_facet |
Sakhalin |
op_source |
Invasive Plant Science and Management volume 1, issue 1, page 31-35 ISSN 1939-7291 1939-747X |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1614/ipsm-07-013r.1 |
container_title |
Invasive Plant Science and Management |
container_volume |
1 |
container_issue |
1 |
container_start_page |
31 |
op_container_end_page |
35 |
_version_ |
1766181688591777792 |