Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement
Chia (Salvia hispanica L.) is a promising crop valued as a sustainable source of omega-3. However, chia yield and quality are reduced because of weed competition and the lack of registered herbicides. This study evaluated how chia spatial arrangement suppresses weed growth and provided management op...
| Autores principales: | , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2025
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/21477 https://www.sciencedirect.com/science/article/abs/pii/S0261219424004010 https://doi.org/10.1016/j.cropro.2024.106973 |
| _version_ | 1855486759810367488 |
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| author | Anuch Tiranti, Juan Valentín Curti, Ramiro Nestor Acreche, Martin Moises |
| author_browse | Acreche, Martin Moises Anuch Tiranti, Juan Valentín Curti, Ramiro Nestor |
| author_facet | Anuch Tiranti, Juan Valentín Curti, Ramiro Nestor Acreche, Martin Moises |
| author_sort | Anuch Tiranti, Juan Valentín |
| collection | INTA Digital |
| description | Chia (Salvia hispanica L.) is a promising crop valued as a sustainable source of omega-3. However, chia yield and quality are reduced because of weed competition and the lack of registered herbicides. This study evaluated how chia spatial arrangement suppresses weed growth and provided management options for this crop. The performance of chia plants was assessed over three growing seasons in field experiments using a factorial design that considered spatial arrangement (narrow and wide), weed management (control without weeds, soil bank brassica (Brassica rapa L.), and sown brassica), and cover crop (with or without a rye (Secale cereale L.) cover crop during chia fallow). Chia and brassica are not complementary, leading to resource competition (relative yield total around 1) and negative effects on each other. A significant decrease in chia grain yield of 0.9% per unit increase in the percentage of weeds in total biomass was observed. As chia had a competitive advantage over brassica, the grain yield reduction was ameliorated with a narrow spatial arrangement. Narrow spatial arrangement promotes faster canopy closure during the early growth stages, decreasing light penetration and suppressing weed growth. The high extinction coefficient of chia (0.91) and the low critical LAI (3.3) contributed to this light interception behavior. Accordingly, to maximize chia productivity and profitability, a narrow spatial arrangement is an effective management strategy to suppress weeds. This study contributes valuable insights into chia-weed interactions and emphasizes the importance of sustainable crop management practices. |
| format | Artículo |
| id | INTA21477 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA214772025-02-26T14:56:17Z Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement Anuch Tiranti, Juan Valentín Curti, Ramiro Nestor Acreche, Martin Moises Salvia hispanica Chia Seeds Weeds Brassica Yields Sustainability Semilla de Chía Malezas Rendimiento Sostenibilidad Chia Chia (Salvia hispanica L.) is a promising crop valued as a sustainable source of omega-3. However, chia yield and quality are reduced because of weed competition and the lack of registered herbicides. This study evaluated how chia spatial arrangement suppresses weed growth and provided management options for this crop. The performance of chia plants was assessed over three growing seasons in field experiments using a factorial design that considered spatial arrangement (narrow and wide), weed management (control without weeds, soil bank brassica (Brassica rapa L.), and sown brassica), and cover crop (with or without a rye (Secale cereale L.) cover crop during chia fallow). Chia and brassica are not complementary, leading to resource competition (relative yield total around 1) and negative effects on each other. A significant decrease in chia grain yield of 0.9% per unit increase in the percentage of weeds in total biomass was observed. As chia had a competitive advantage over brassica, the grain yield reduction was ameliorated with a narrow spatial arrangement. Narrow spatial arrangement promotes faster canopy closure during the early growth stages, decreasing light penetration and suppressing weed growth. The high extinction coefficient of chia (0.91) and the low critical LAI (3.3) contributed to this light interception behavior. Accordingly, to maximize chia productivity and profitability, a narrow spatial arrangement is an effective management strategy to suppress weeds. This study contributes valuable insights into chia-weed interactions and emphasizes the importance of sustainable crop management practices. EEA Salta Fil: Anuch Tiranti, Juan Valentín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Anuch Tiranti, Juan Valentín. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Curti, Ramiro Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Laboratorio de Investigaciones Botánicas; Argentina Fil: Curti, Ramiro Nestor. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Escuela de Agronomía. Laboratorio de Investigaciones Botánicas; Argentina Fil: Acreche, Martin Moises. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Acreche, Martin Moises. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2025-02-26T14:53:58Z 2025-02-26T14:53:58Z 2025-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/21477 https://www.sciencedirect.com/science/article/abs/pii/S0261219424004010 0261-2194 1873-6904 https://doi.org/10.1016/j.cropro.2024.106973 eng info:eu-repograntAgreement/INTA/PNIND-1108064/AR./Bases ecofisiológicas del mejoramiento y sistemas de cultivo. info:eu-repo/semantics/restrictedAccess 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 Elsevier Crop Protection 187 : 106973. (January 2025) |
| spellingShingle | Salvia hispanica Chia Seeds Weeds Brassica Yields Sustainability Semilla de Chía Malezas Rendimiento Sostenibilidad Chia Anuch Tiranti, Juan Valentín Curti, Ramiro Nestor Acreche, Martin Moises Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement |
| title | Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement |
| title_full | Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement |
| title_fullStr | Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement |
| title_full_unstemmed | Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement |
| title_short | Competitiveness of chia against brassica weeds improves through a narrow spatial arrangement |
| title_sort | competitiveness of chia against brassica weeds improves through a narrow spatial arrangement |
| topic | Salvia hispanica Chia Seeds Weeds Brassica Yields Sustainability Semilla de Chía Malezas Rendimiento Sostenibilidad Chia |
| url | http://hdl.handle.net/20.500.12123/21477 https://www.sciencedirect.com/science/article/abs/pii/S0261219424004010 https://doi.org/10.1016/j.cropro.2024.106973 |
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