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Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)

Daniel Jones Orcid Logo, Mike Fowler Orcid Logo, Sophie Hocking, Dan Eastwood Orcid Logo

NeoBiota, Volume: 74, Pages: 171 - 187

Swansea University Authors: Mike Fowler Orcid Logo, Sophie Hocking, Dan Eastwood Orcid Logo

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DOI (Published version): 10.3897/neobiota.74.82673

Abstract

Winter Heliotrope (Petasites pyrenaicus, previously P. fragrans), is a persistent, rhizome-forming species found throughout the Mediterranean region and North Africa and is an Invasive Alien Plant (IAP) in the UK and Ireland. P. pyrenaicus excludes native flora by forming a dense, compact canopy tha...

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Published in: NeoBiota
ISSN: 1619-0033 1314-2488
Published: Pensoft Publishers 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa60655
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P. pyrenaicus excludes native flora by forming a dense, compact canopy that per- sists for much of the growing season, and is often found growing in rough ground, riparian areas and along communication routes, incurring significant management costs at sites of conservation interest. Our study describes the first field-based assessment of P. pyrenaicus control treatments, testing 12 physical and/or chemical treatments in replicated 1 m2 plots over four years and one chemical treatment over three years. Treatments focused on understanding phenology and resource allocation to exploit rhizome source- sink relationships in P. pyrenaicus. Multiple-stage glyphosate- and picloram-based treatments reduced leaf canopy cover to zero (%) over time, though no treatment completely eradicated P. pyrenaicus. When designing management strategies, effective P. pyrenaicus control may be achieved by a single annual soil and/or foliar application of picloram at 1.34 kg AE ha-1 in spring, or by a single annual foliar application of glyphosate in spring at 2.16 kg AE ha-1. Control is not improved by the addition of other herbicides or physical treatment methods, underlining the importance of these herbicides for perennial invasive plant management. 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spelling 2022-11-24T09:12:16.7216240 v2 60655 2022-07-27 Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae) a3a29027498d4b43a3f082a0a5ba16b4 0000-0003-1544-0407 Mike Fowler Mike Fowler true false 6d964c669834c2532e4d3f25343e157c Sophie Hocking Sophie Hocking true false 4982f3fa83886c0362e2bb43ce1c027f 0000-0002-7015-0739 Dan Eastwood Dan Eastwood true false 2022-07-27 SBI Winter Heliotrope (Petasites pyrenaicus, previously P. fragrans), is a persistent, rhizome-forming species found throughout the Mediterranean region and North Africa and is an Invasive Alien Plant (IAP) in the UK and Ireland. P. pyrenaicus excludes native flora by forming a dense, compact canopy that per- sists for much of the growing season, and is often found growing in rough ground, riparian areas and along communication routes, incurring significant management costs at sites of conservation interest. Our study describes the first field-based assessment of P. pyrenaicus control treatments, testing 12 physical and/or chemical treatments in replicated 1 m2 plots over four years and one chemical treatment over three years. Treatments focused on understanding phenology and resource allocation to exploit rhizome source- sink relationships in P. pyrenaicus. Multiple-stage glyphosate- and picloram-based treatments reduced leaf canopy cover to zero (%) over time, though no treatment completely eradicated P. pyrenaicus. When designing management strategies, effective P. pyrenaicus control may be achieved by a single annual soil and/or foliar application of picloram at 1.34 kg AE ha-1 in spring, or by a single annual foliar application of glyphosate in spring at 2.16 kg AE ha-1. Control is not improved by the addition of other herbicides or physical treatment methods, underlining the importance of these herbicides for perennial invasive plant management. This work confirms the importance of considering plant phenology, resource allocation and rhizome source-sink relationships, to increase treatment efficacy and reduce the environmental impacts associated with the management of P. pyrenaicus and other invasive, rhizome forming species. Journal Article NeoBiota 74 171 187 Pensoft Publishers 1619-0033 1314-2488 Field trial, herbicide, Integrated Weed Management (IWM) system, invasive alien plants (IAPs), invasive non-native species (INNS), Petasites fragrans, Petasites pyrenaicus, rhizome source-sink, Winter Heliotrope 27 7 2022 2022-07-27 10.3897/neobiota.74.82673 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University Other OA charge covered by industrial partner (Advanced Invasives Ltd.) This work is part-funded by the European Social Fund (ESF) through the European Union’s Convergence programme administered by the Welsh Government with Swansea University and Complete Weed Control Ltd. 2022-11-24T09:12:16.7216240 2022-07-27T22:28:43.0204876 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Daniel Jones 0000-0002-3192-6450 1 Mike Fowler 0000-0003-1544-0407 2 Sophie Hocking 3 Dan Eastwood 0000-0002-7015-0739 4 60655__24776__938d3131127c454cb4f9dc04a5637323.pdf Jones_etal_2022_NeoBiota.pdf 2022-07-27T22:36:04.8517094 Output 3889038 application/pdf Version of Record true Copyright Daniel Jones et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) true eng http://creativecommons.org/licenses/by/4.0/
title Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)
spellingShingle Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)
Mike Fowler
Sophie Hocking
Dan Eastwood
title_short Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)
title_full Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)
title_fullStr Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)
title_full_unstemmed Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)
title_sort Comparing field-based management approaches for invasive Winter Heliotrope (Petasites pyrenaicus, Asteraceae)
author_id_str_mv a3a29027498d4b43a3f082a0a5ba16b4
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author_id_fullname_str_mv a3a29027498d4b43a3f082a0a5ba16b4_***_Mike Fowler
6d964c669834c2532e4d3f25343e157c_***_Sophie Hocking
4982f3fa83886c0362e2bb43ce1c027f_***_Dan Eastwood
author Mike Fowler
Sophie Hocking
Dan Eastwood
author2 Daniel Jones
Mike Fowler
Sophie Hocking
Dan Eastwood
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container_title NeoBiota
container_volume 74
container_start_page 171
publishDate 2022
institution Swansea University
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1314-2488
doi_str_mv 10.3897/neobiota.74.82673
publisher Pensoft Publishers
college_str Faculty of Science and Engineering
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hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
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description Winter Heliotrope (Petasites pyrenaicus, previously P. fragrans), is a persistent, rhizome-forming species found throughout the Mediterranean region and North Africa and is an Invasive Alien Plant (IAP) in the UK and Ireland. P. pyrenaicus excludes native flora by forming a dense, compact canopy that per- sists for much of the growing season, and is often found growing in rough ground, riparian areas and along communication routes, incurring significant management costs at sites of conservation interest. Our study describes the first field-based assessment of P. pyrenaicus control treatments, testing 12 physical and/or chemical treatments in replicated 1 m2 plots over four years and one chemical treatment over three years. Treatments focused on understanding phenology and resource allocation to exploit rhizome source- sink relationships in P. pyrenaicus. Multiple-stage glyphosate- and picloram-based treatments reduced leaf canopy cover to zero (%) over time, though no treatment completely eradicated P. pyrenaicus. When designing management strategies, effective P. pyrenaicus control may be achieved by a single annual soil and/or foliar application of picloram at 1.34 kg AE ha-1 in spring, or by a single annual foliar application of glyphosate in spring at 2.16 kg AE ha-1. Control is not improved by the addition of other herbicides or physical treatment methods, underlining the importance of these herbicides for perennial invasive plant management. This work confirms the importance of considering plant phenology, resource allocation and rhizome source-sink relationships, to increase treatment efficacy and reduce the environmental impacts associated with the management of P. pyrenaicus and other invasive, rhizome forming species.
published_date 2022-07-27T04:18:56Z
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