Thermal time and extreme weather events determine the emergence of Amaranthus palmeri
Background: Amaranthus palmeri has emerged as the most widespread weed of agricultural land in large parts of North and South America. Understanding its population dynamics and the influence of meteorological variables becomes important for decision-making in an integrated management context. The hy...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Brazilian Weed Science Society
2023
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/16378 https://awsjournal.org/article/thermal-time-and-extreme-weather-events-determine-the-emergence-of-amaranthus-palmeri/ https://doi.org/10.51694/AdvWeedSci/2022;40:Amaranthus006 |
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| author | Ledda, Alejandra Rosa Yanniccari, Marcos Castro Franco, Mauricio Sobrero, María T. |
| author_browse | Castro Franco, Mauricio Ledda, Alejandra Rosa Sobrero, María T. Yanniccari, Marcos |
| author_facet | Ledda, Alejandra Rosa Yanniccari, Marcos Castro Franco, Mauricio Sobrero, María T. |
| author_sort | Ledda, Alejandra Rosa |
| collection | INTA Digital |
| description | Background: Amaranthus palmeri has emerged as the most widespread weed of agricultural land in large parts of North and South America. Understanding its population dynamics and the influence of meteorological variables becomes important for decision-making in an integrated management context. The hypothesis is that the emergence of A. palmeri is influenced by thermal time and extreme weather events that occurred in the previous 45, 30 or 15 days.
Objective: The work was aimed to detect the influence of meteorological variables and extreme weather events on the emergence of A. palmeri under field conditions.
Methods: A field experiment was carried out in order to record seedling emergence of A. palmeri in two growing seasons, 2017/2018 (S1) and 2018/2019 (S2), in Argentina. Associations between weed emergence and thermal time (in growing degree-days GDD), meteorological variables or extreme weather events recorded at 15, 30 and 45 days before to each evaluation time were studied by regression, principal components and multiple correspondence analyses.
Results: Thermal time was closely associated to the progress of cumulative emergence in both seasons, but the emergence periodicity was conditional with rainfall. The high precipitation during the spring determined a short lag period (121.8 GDD) in S2. Contrarily, the largest lag period (236.6 GDD) was detected in S1 related to a drought that concentrated the emergence in the beginning of the summer when the rainfall increased.
Conclusions: Thermal time allows the cumulative emergence prediction; however, extreme weather events like drought induce quiescence, concentrating the emergence in a short period. |
| format | info:ar-repo/semantics/artículo |
| id | INTA16378 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Brazilian Weed Science Society |
| publisherStr | Brazilian Weed Science Society |
| record_format | dspace |
| spelling | INTA163782023-12-28T11:20:41Z Thermal time and extreme weather events determine the emergence of Amaranthus palmeri Ledda, Alejandra Rosa Yanniccari, Marcos Castro Franco, Mauricio Sobrero, María T. Amaranthus Sequía Temperatura Drought Temperature Extreme Weather Events Fenómenos Meteorológicos Extremos Amaranthus palmeri Background: Amaranthus palmeri has emerged as the most widespread weed of agricultural land in large parts of North and South America. Understanding its population dynamics and the influence of meteorological variables becomes important for decision-making in an integrated management context. The hypothesis is that the emergence of A. palmeri is influenced by thermal time and extreme weather events that occurred in the previous 45, 30 or 15 days. Objective: The work was aimed to detect the influence of meteorological variables and extreme weather events on the emergence of A. palmeri under field conditions. Methods: A field experiment was carried out in order to record seedling emergence of A. palmeri in two growing seasons, 2017/2018 (S1) and 2018/2019 (S2), in Argentina. Associations between weed emergence and thermal time (in growing degree-days GDD), meteorological variables or extreme weather events recorded at 15, 30 and 45 days before to each evaluation time were studied by regression, principal components and multiple correspondence analyses. Results: Thermal time was closely associated to the progress of cumulative emergence in both seasons, but the emergence periodicity was conditional with rainfall. The high precipitation during the spring determined a short lag period (121.8 GDD) in S2. Contrarily, the largest lag period (236.6 GDD) was detected in S1 related to a drought that concentrated the emergence in the beginning of the summer when the rainfall increased. Conclusions: Thermal time allows the cumulative emergence prediction; however, extreme weather events like drought induce quiescence, concentrating the emergence in a short period. EEA Las Breñas Fil: Ledda, Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Las Breñas; Argentina Fil: Yanniccari, Marcos. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentina Fil: Castro Franco, Mauricio. Universidad de los Llanos. Facultad de Ciencias Agropecuarias y Recursos Naturales. Precision agriculture research group; Colombia Fil: Sobrero, María T. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina. 2023-12-28T10:58:52Z 2023-12-28T10:58:52Z 2022-03-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/16378 https://awsjournal.org/article/thermal-time-and-extreme-weather-events-determine-the-emergence-of-amaranthus-palmeri/ 2675-9462 https://doi.org/10.51694/AdvWeedSci/2022;40:Amaranthus006 eng info:eu-repograntAgreement/INTA/2019-PIT.IR-4131.I068-001, Sudoeste Chaco-Noreste Sgo. del Estero info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Brazilian Weed Science Society Advances in Weed Science 40 (spe2) : e020220104. (2022) |
| spellingShingle | Amaranthus Sequía Temperatura Drought Temperature Extreme Weather Events Fenómenos Meteorológicos Extremos Amaranthus palmeri Ledda, Alejandra Rosa Yanniccari, Marcos Castro Franco, Mauricio Sobrero, María T. Thermal time and extreme weather events determine the emergence of Amaranthus palmeri |
| title | Thermal time and extreme weather events determine the emergence of Amaranthus palmeri |
| title_full | Thermal time and extreme weather events determine the emergence of Amaranthus palmeri |
| title_fullStr | Thermal time and extreme weather events determine the emergence of Amaranthus palmeri |
| title_full_unstemmed | Thermal time and extreme weather events determine the emergence of Amaranthus palmeri |
| title_short | Thermal time and extreme weather events determine the emergence of Amaranthus palmeri |
| title_sort | thermal time and extreme weather events determine the emergence of amaranthus palmeri |
| topic | Amaranthus Sequía Temperatura Drought Temperature Extreme Weather Events Fenómenos Meteorológicos Extremos Amaranthus palmeri |
| url | http://hdl.handle.net/20.500.12123/16378 https://awsjournal.org/article/thermal-time-and-extreme-weather-events-determine-the-emergence-of-amaranthus-palmeri/ https://doi.org/10.51694/AdvWeedSci/2022;40:Amaranthus006 |
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