Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina
Cover crops (CC) are increasingly used worldwide within integrated weed management scenarios. They are usually established between two commercial crops and are not harvested, grazed, or incorporated into the soil, but remain on the surface during their growth cycle. The aim of this work was to deter...
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Frontiers Media
2025
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/21522 https://www.frontiersin.org/journals/agronomy/articles/10.3389/fagro.2023.1330073/full https://doi.org/10.3389/fagro.2023.1330073 |
| _version_ | 1855038415154708480 |
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| author | Malaspina, Micaela Chantre Balacca, Guillermo Ruben Yanniccari, Marcos Ezequiel |
| author_browse | Chantre Balacca, Guillermo Ruben Malaspina, Micaela Yanniccari, Marcos Ezequiel |
| author_facet | Malaspina, Micaela Chantre Balacca, Guillermo Ruben Yanniccari, Marcos Ezequiel |
| author_sort | Malaspina, Micaela |
| collection | INTA Digital |
| description | Cover crops (CC) are increasingly used worldwide within integrated weed management scenarios. They are usually established between two commercial crops and are not harvested, grazed, or incorporated into the soil, but remain on the surface during their growth cycle. The aim of this work was to determine the performance of different CC mixtures and their effects on weed suppression in the south-central region of Buenos Aires province, Argentina. Field experiments were carried out in 2019 and 2020 at the CEI Barrow (MDA-INTA, Tres Arroyos), where both binary and ternary CC mixtures were evaluated. Binary mixtures consisted of winter cereals (Avena sativa, Secale cereale) and legumes (Vicia villosa, Vicia sativa) while ternary mixtures were obtained by combining binary mixtures with canola (Brassica napus). Weed emergence counting was performed on a 14- day basis to determine weed total density. Vegetation cover of the CC mixtures as well as biomass production from crops and weeds were estimated. The specific composition of the mixtures showed a greater influence on vegetation cover than on biomass production, which would depend mainly on the prevailing environmental conditions. The type of vetch used, the addition of canola, as well as, the proportion of cereals in the mixture determined the CC effect on weeds. CC were consistently more effective in suppressing weed biomass than seedling emergence density. However, weed seedling suppression by CC was similar to or even greater than the chemical-based control (p<0.0001). The average biomass of weeds in all CC (pooled data) was highly reduced when compared to the weedy control (12 vs 259 g m-2, p<0.001), and similar responses were obtained when compared to the chemical fallow (8 g m-2). The mixture S. cereal+ V. villosa+ canola stood out for presenting the highest values of productivity and vegetation cover and high weed suppression. These results provide support for the choice of CC mixtures in a dry sub-humid area of Argentina, aimed at maximizing interference with weeds and also to demonstrate their benefits in short- and long-term management. Therefore, CC implementation within crop sequences should be considered as a complementary tool contributing to the development of more sustainable management strategies. |
| format | info:ar-repo/semantics/artículo |
| id | INTA21522 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | INTA215222025-02-28T14:28:47Z Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina Malaspina, Micaela Chantre Balacca, Guillermo Ruben Yanniccari, Marcos Ezequiel Plantas de Cobertura Malezas Cereales Leguminosas Argentina Cover Plants Weeds Cereals Legumes Cultivos de Cobertura Cover Crops Cover crops (CC) are increasingly used worldwide within integrated weed management scenarios. They are usually established between two commercial crops and are not harvested, grazed, or incorporated into the soil, but remain on the surface during their growth cycle. The aim of this work was to determine the performance of different CC mixtures and their effects on weed suppression in the south-central region of Buenos Aires province, Argentina. Field experiments were carried out in 2019 and 2020 at the CEI Barrow (MDA-INTA, Tres Arroyos), where both binary and ternary CC mixtures were evaluated. Binary mixtures consisted of winter cereals (Avena sativa, Secale cereale) and legumes (Vicia villosa, Vicia sativa) while ternary mixtures were obtained by combining binary mixtures with canola (Brassica napus). Weed emergence counting was performed on a 14- day basis to determine weed total density. Vegetation cover of the CC mixtures as well as biomass production from crops and weeds were estimated. The specific composition of the mixtures showed a greater influence on vegetation cover than on biomass production, which would depend mainly on the prevailing environmental conditions. The type of vetch used, the addition of canola, as well as, the proportion of cereals in the mixture determined the CC effect on weeds. CC were consistently more effective in suppressing weed biomass than seedling emergence density. However, weed seedling suppression by CC was similar to or even greater than the chemical-based control (p<0.0001). The average biomass of weeds in all CC (pooled data) was highly reduced when compared to the weedy control (12 vs 259 g m-2, p<0.001), and similar responses were obtained when compared to the chemical fallow (8 g m-2). The mixture S. cereal+ V. villosa+ canola stood out for presenting the highest values of productivity and vegetation cover and high weed suppression. These results provide support for the choice of CC mixtures in a dry sub-humid area of Argentina, aimed at maximizing interference with weeds and also to demonstrate their benefits in short- and long-term management. Therefore, CC implementation within crop sequences should be considered as a complementary tool contributing to the development of more sustainable management strategies. EEA Barrow Fil: Malaspina, Maria Micaela. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentina Fil: Chantre, G. R. Universidad Nacional del Sur. Departamento de Agronomía; Argentina Fil: Chantre, G. R. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Fil: Chantre, G. R. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Fil: Yanniccari, Marcos Ezequiel. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentina Fil: Yanniccari, Marcos Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Laboratory of Biotechnology and Plant Genetics; Argentina Fil: Yanniccari, Marcos Ezequiel. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentina 2025-02-28T14:25:04Z 2025-02-28T14:25:04Z 2024-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/21522 https://www.frontiersin.org/journals/agronomy/articles/10.3389/fagro.2023.1330073/full 2673-3218 https://doi.org/10.3389/fagro.2023.1330073 eng 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 Frontiers Media Frontiers in Agronomy 5 : 1330073. (January 2024) |
| spellingShingle | Plantas de Cobertura Malezas Cereales Leguminosas Argentina Cover Plants Weeds Cereals Legumes Cultivos de Cobertura Cover Crops Malaspina, Micaela Chantre Balacca, Guillermo Ruben Yanniccari, Marcos Ezequiel Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina |
| title | Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina |
| title_full | Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina |
| title_fullStr | Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina |
| title_full_unstemmed | Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina |
| title_short | Effect of cover crops mixtures on weed suppression capacity in a dry sub-humid environment of Argentina |
| title_sort | effect of cover crops mixtures on weed suppression capacity in a dry sub humid environment of argentina |
| topic | Plantas de Cobertura Malezas Cereales Leguminosas Argentina Cover Plants Weeds Cereals Legumes Cultivos de Cobertura Cover Crops |
| url | http://hdl.handle.net/20.500.12123/21522 https://www.frontiersin.org/journals/agronomy/articles/10.3389/fagro.2023.1330073/full https://doi.org/10.3389/fagro.2023.1330073 |
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