Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops
The semiarid Espinal in central Argentina, being recently transformed from natural semiarid grasslands into agriculture, represents an interesting scenario to understand the early stages of weed community assembly and its relationship with crop identity and management. Our aim was to characterize th...
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| Format: | Artículo |
| Language: | Inglés |
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2018
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| Online Access: | http://hdl.handle.net/20.500.12123/2869 https://www.cambridge.org/core/journals/weed-science/article/weed-communities-in-semiarid-rainfed-croplands-of-central-argentina-comparison-between-corn-zea-mays-and-soybean-glycine-max-crops/DCA6EEB36D7E14ABC5E4C669CFD5EBF5 https://doi.org/10.1017/wsc.2017.76 |
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| author | Rauber, Ruth Bibiana Demaria, Manuel Rodolfo Jobbagy Gampel, Esteban Gabriel Arroyo, Daniel Nicolas Poggio, Santiago Luis |
| author_browse | Arroyo, Daniel Nicolas Demaria, Manuel Rodolfo Jobbagy Gampel, Esteban Gabriel Poggio, Santiago Luis Rauber, Ruth Bibiana |
| author_facet | Rauber, Ruth Bibiana Demaria, Manuel Rodolfo Jobbagy Gampel, Esteban Gabriel Arroyo, Daniel Nicolas Poggio, Santiago Luis |
| author_sort | Rauber, Ruth Bibiana |
| collection | INTA Digital |
| description | The semiarid Espinal in central Argentina, being recently transformed from natural semiarid grasslands into agriculture, represents an interesting scenario to understand the early stages of weed community assembly and its relationship with crop identity and management. Our aim was to characterize the weed communities in corn (Zea mays L.) and soybean [Glycine max (L.) Merr.], the main crops of the Espinal region, under the dominant rainfed conditions. Weed surveys were carried out in 53 fields, and farmers were interviewed to collect information about crop management. Floristic composition was compared within and between crops by calculating the additive partition of the abundance-based Bray-Curtis dissimilarity. We compared the frequency and mean cover of functional groups between crops through generalized linear models. Finally, canonical correspondence analysis was carried out to analyze the associations between floristic composition and agronomic variables. Mean alpha and gamma diversity was greater in corn (10.0 and 80 species, respectively) than in soybean (7.6 and 46 species, respectively). Furthermore, species composition of weed communities was more similar among soybean fields than among either cornfields or fields of both crops. Hence, floristic differences between crops are potentially the result of different microenvironmental heterogeneity above- and belowground, with corn likely to be more permissive to weed establishment compared with soybean. The higher frequency of annual, dicotyledonous, and native species, and the high proportion of rare species, mostly native, suggest a strong legacy of the original vegetation that thrived in these recently cultivated systems. The functional composition was also affected by agronomic management, with sulfur, nitrogen, and grass herbicide application being the most important factors related to the floristic composition of weed communities. This early description can be used as a starting point for studies concerning trajectories, mechanisms, and processes of weed communities related to environment and management. |
| format | Artículo |
| id | INTA2869 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA28692025-04-28T09:58:45Z Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops Rauber, Ruth Bibiana Demaria, Manuel Rodolfo Jobbagy Gampel, Esteban Gabriel Arroyo, Daniel Nicolas Poggio, Santiago Luis Tierras Agrícolas Malezas Maíz Soja Cultivo de Temporal Farmland Weeds Maize Soybeans Rainfed Farming Argentina The semiarid Espinal in central Argentina, being recently transformed from natural semiarid grasslands into agriculture, represents an interesting scenario to understand the early stages of weed community assembly and its relationship with crop identity and management. Our aim was to characterize the weed communities in corn (Zea mays L.) and soybean [Glycine max (L.) Merr.], the main crops of the Espinal region, under the dominant rainfed conditions. Weed surveys were carried out in 53 fields, and farmers were interviewed to collect information about crop management. Floristic composition was compared within and between crops by calculating the additive partition of the abundance-based Bray-Curtis dissimilarity. We compared the frequency and mean cover of functional groups between crops through generalized linear models. Finally, canonical correspondence analysis was carried out to analyze the associations between floristic composition and agronomic variables. Mean alpha and gamma diversity was greater in corn (10.0 and 80 species, respectively) than in soybean (7.6 and 46 species, respectively). Furthermore, species composition of weed communities was more similar among soybean fields than among either cornfields or fields of both crops. Hence, floristic differences between crops are potentially the result of different microenvironmental heterogeneity above- and belowground, with corn likely to be more permissive to weed establishment compared with soybean. The higher frequency of annual, dicotyledonous, and native species, and the high proportion of rare species, mostly native, suggest a strong legacy of the original vegetation that thrived in these recently cultivated systems. The functional composition was also affected by agronomic management, with sulfur, nitrogen, and grass herbicide application being the most important factors related to the floristic composition of weed communities. This early description can be used as a starting point for studies concerning trajectories, mechanisms, and processes of weed communities related to environment and management. EEA San Luis Fil: Rauber, Ruth Bibiana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Demaria, Manuel Rodolfo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis; Argentina Fil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Matemática Aplicada de San Luis. Grupo de Estudios Ambientales; Argentina. Universidad Nacional de San Luis; Argentina Fil: Arroyo, Daniel Nicolas. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis; Argentina Fil: Poggio, Santiago Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina 2018-07-25T12:28:58Z 2018-07-25T12:28:58Z 2018-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/2869 https://www.cambridge.org/core/journals/weed-science/article/weed-communities-in-semiarid-rainfed-croplands-of-central-argentina-comparison-between-corn-zea-mays-and-soybean-glycine-max-crops/DCA6EEB36D7E14ABC5E4C669CFD5EBF5 0043-1745 1550-2759 https://doi.org/10.1017/wsc.2017.76 eng info:eu-repo/semantics/restrictedAccess application/pdf Weed Science 66 (3) : 368-378 (May 2018) |
| spellingShingle | Tierras Agrícolas Malezas Maíz Soja Cultivo de Temporal Farmland Weeds Maize Soybeans Rainfed Farming Argentina Rauber, Ruth Bibiana Demaria, Manuel Rodolfo Jobbagy Gampel, Esteban Gabriel Arroyo, Daniel Nicolas Poggio, Santiago Luis Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops |
| title | Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops |
| title_full | Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops |
| title_fullStr | Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops |
| title_full_unstemmed | Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops |
| title_short | Weed Communities in Semiarid Rainfed Croplands of Central Argentina: Comparison between Corn (Zea mays) and Soybean (Glycine max) Crops |
| title_sort | weed communities in semiarid rainfed croplands of central argentina comparison between corn zea mays and soybean glycine max crops |
| topic | Tierras Agrícolas Malezas Maíz Soja Cultivo de Temporal Farmland Weeds Maize Soybeans Rainfed Farming Argentina |
| url | http://hdl.handle.net/20.500.12123/2869 https://www.cambridge.org/core/journals/weed-science/article/weed-communities-in-semiarid-rainfed-croplands-of-central-argentina-comparison-between-corn-zea-mays-and-soybean-glycine-max-crops/DCA6EEB36D7E14ABC5E4C669CFD5EBF5 https://doi.org/10.1017/wsc.2017.76 |
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