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Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management
Whilst it is agreed that climate change will impact on the long-term interactions between crops and weeds, the results of this impact are far from clear. We suggest that a thorough understanding of weed dominance and weed interactions, depending on crop and weed ecosystems and crop sequences in the...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5303747/ https://www.ncbi.nlm.nih.gov/pubmed/28243245 http://dx.doi.org/10.3389/fpls.2017.00095 |
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author | Ramesh, Kulasekaran Matloob, Amar Aslam, Farhena Florentine, Singarayer K. Chauhan, Bhagirath S. |
author_facet | Ramesh, Kulasekaran Matloob, Amar Aslam, Farhena Florentine, Singarayer K. Chauhan, Bhagirath S. |
author_sort | Ramesh, Kulasekaran |
collection | PubMed |
description | Whilst it is agreed that climate change will impact on the long-term interactions between crops and weeds, the results of this impact are far from clear. We suggest that a thorough understanding of weed dominance and weed interactions, depending on crop and weed ecosystems and crop sequences in the ecosystem, will be the key determining factor for successful weed management. Indeed, we claim that recent changes observed throughout the world within the weed spectrum in different cropping systems which were ostensibly related to climate change, warrant a deeper examination of weed vulnerabilities before a full understanding is reached. For example, the uncontrolled establishment of weeds in crops leads to a mixed population, in terms of C(3) and C(4) pathways, and this poses a considerable level of complexity for weed management. There is a need to include all possible combinations of crops and weeds while studying the impact of climate change on crop-weed competitive interactions, since, from a weed management perspective, C(4) weeds would flourish in the increased temperature scenario and pose serious yield penalties. This is particularly alarming as a majority of the most competitive weeds are C(4) plants. Although CO(2) is considered as a main contributing factor for climate change, a few Australian studies have also predicted differing responses of weed species due to shifts in rainfall patterns. Reduced water availability, due to recurrent and unforeseen droughts, would alter the competitive balance between crops and some weed species, intensifying the crop-weed competition pressure. Although it is recognized that the weed pressure associated with climate change is a significant threat to crop production, either through increased temperatures, rainfall shift, and elevated CO(2) levels, the current knowledge of this effect is very sparse. A few models that have attempted to predict these interactions are discussed in this paper, since these models could play an integral role in developing future management programs for future weed threats. This review has presented a comprehensive discussion of the recent research in this area, and has identified key deficiencies which need further research in crop-weed eco-systems to formulate suitable control measures before the real impacts of climate change set in. |
format | Online Article Text |
id | pubmed-5303747 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-53037472017-02-27 Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management Ramesh, Kulasekaran Matloob, Amar Aslam, Farhena Florentine, Singarayer K. Chauhan, Bhagirath S. Front Plant Sci Plant Science Whilst it is agreed that climate change will impact on the long-term interactions between crops and weeds, the results of this impact are far from clear. We suggest that a thorough understanding of weed dominance and weed interactions, depending on crop and weed ecosystems and crop sequences in the ecosystem, will be the key determining factor for successful weed management. Indeed, we claim that recent changes observed throughout the world within the weed spectrum in different cropping systems which were ostensibly related to climate change, warrant a deeper examination of weed vulnerabilities before a full understanding is reached. For example, the uncontrolled establishment of weeds in crops leads to a mixed population, in terms of C(3) and C(4) pathways, and this poses a considerable level of complexity for weed management. There is a need to include all possible combinations of crops and weeds while studying the impact of climate change on crop-weed competitive interactions, since, from a weed management perspective, C(4) weeds would flourish in the increased temperature scenario and pose serious yield penalties. This is particularly alarming as a majority of the most competitive weeds are C(4) plants. Although CO(2) is considered as a main contributing factor for climate change, a few Australian studies have also predicted differing responses of weed species due to shifts in rainfall patterns. Reduced water availability, due to recurrent and unforeseen droughts, would alter the competitive balance between crops and some weed species, intensifying the crop-weed competition pressure. Although it is recognized that the weed pressure associated with climate change is a significant threat to crop production, either through increased temperatures, rainfall shift, and elevated CO(2) levels, the current knowledge of this effect is very sparse. A few models that have attempted to predict these interactions are discussed in this paper, since these models could play an integral role in developing future management programs for future weed threats. This review has presented a comprehensive discussion of the recent research in this area, and has identified key deficiencies which need further research in crop-weed eco-systems to formulate suitable control measures before the real impacts of climate change set in. Frontiers Media S.A. 2017-02-13 /pmc/articles/PMC5303747/ /pubmed/28243245 http://dx.doi.org/10.3389/fpls.2017.00095 Text en Copyright © 2017 Ramesh, Matloob, Aslam, Florentine and Chauhan. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Ramesh, Kulasekaran Matloob, Amar Aslam, Farhena Florentine, Singarayer K. Chauhan, Bhagirath S. Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management |
title | Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management |
title_full | Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management |
title_fullStr | Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management |
title_full_unstemmed | Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management |
title_short | Weeds in a Changing Climate: Vulnerabilities, Consequences, and Implications for Future Weed Management |
title_sort | weeds in a changing climate: vulnerabilities, consequences, and implications for future weed management |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5303747/ https://www.ncbi.nlm.nih.gov/pubmed/28243245 http://dx.doi.org/10.3389/fpls.2017.00095 |
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