Intensification of crop rotation affecting weed communities and the use of herbicides in the rolling Pampa

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Weeds are one of the main problems in the cropping systems of the Rolling Pampa (Argentina), where glyphosate resistant varieties of soybean sown with no-tillage system became the most important crop in the rotation. The challenge to solve this problem is to apply alternative approaches that both re...

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Detalles Bibliográficos
Otros Autores: De la Fuente, Elba Beatriz, Oreja, Fernando Hugo, Lenardis, Adriana Ester, Torcat Fuentes, Marianne, Agosti, María Belén, Barrio, Antonio Pedro, Barberis, Santiago, Robredo, Julieta Anahí, Gil, Alejandra, Marzetti, Martín, Niccia, Eugenia
Formato: Artículo
Lenguaje:Inglés
Materias:
COVER CROPS
ECOLOGICAL FILTERS
SEEDBANK
SPECIES RICHNESS
NO TILLAGE
Acceso en línea:http://ri.agro.uba.ar/files/download/articulo/2021delafuente.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 |a Intensification of crop rotation affecting weed communities and the use of herbicides in the rolling Pampa 
520 |a Weeds are one of the main problems in the cropping systems of the Rolling Pampa (Argentina), where glyphosate resistant varieties of soybean sown with no-tillage system became the most important crop in the rotation. The challenge to solve this problem is to apply alternative approaches that both reduce weediness and the use of chemicals. Thus, the objectives of this work were i) to study the impact of crop rotation intensification on the species composition and richness of weed communities and to identify the relationship with some environmental (soil mineral organic matter) and agronomic variables (intensification, cereal crops in the rotation, biomass production and herbicide applications) and ii) to quantify the use and environmental risk of herbicides related to the intensification of crop rotations. From 2012 to 2019, four rotations were performed on three farms combining crops (soybean, maize, wheat and field pea), cover crops (oats and hairy vetch) and mixed pastures. During spring 2018 and autumn 2019 field and seedbank experiments were performed. PCA using presence-absence of species as response variable and intensification index of rotation (IIR), proportion of cereal crops in the rotation (C), biomass production (B), mineral organic matter (OM) and number of herbicide applications (HA) during the six years of the rotation as explanatory variables. The use and environmental risk of herbicides was also assessed. Surveys and seedbank analysis showed that intensification of crop rotations resulted in differences in the floristic composition of weed communities mainly related to IIR and C. Although the use of herbicides decreased as intensification grew, species richness and abundance did not change. Despite of all the variations considered in this study such as different approaches (emerged weeds and seedbank), locations, crops, pastures and sowing dates, intensification consistently filtered species conforming different weed assemblies and reducing the use of herbicides. Thus, promoting sustainable intensification by increasing cover crops, winter crops, cereal crops and pastures in the rotations would be a useful tool to manage weeds since the use of herbicides can be replaced by increasing the IIR without variations in weed abundance. 
650 |2 Agrovoc  |9 26 
653 |a COVER CROPS 
653 |a ECOLOGICAL FILTERS 
653 |a SEEDBANK 
653 |a SPECIES RICHNESS 
653 |a NO TILLAGE 
700 1 |a De la Fuente, Elba Beatriz  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Buenos Aires, Argentina.  |9 7808 
700 1 |9 21212  |a Oreja, Fernando Hugo  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Buenos Aires, Argentina. 
700 1 |a Lenardis, Adriana Ester  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Buenos Aires, Argentina.  |9 22197 
700 1 |a Torcat Fuentes, Marianne  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Buenos Aires, Argentina.  |9 50908 
700 1 |a Agosti, María Belén  |u Asociación Argentina de Productores en Siembra Directa (AAPRESID). GTD Chacra Pergamino, Rosario, Santa Fe, Argentina.  |9 14473 
700 1 |a Barrio, Antonio Pedro  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Buenos Aires, Argentina.  |9 38354 
700 |a Barberis, Santiago  |u Lares S.R.L. Pergamino, Buenos Aires, Argentina.  |9 40500 
700 1 |a Robredo, Julieta Anahí  |u Lares S.R.L. Pergamino, Buenos Aires, Argentina.  |9 34881 
700 1 |a Gil, Alejandra  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Buenos Aires, Argentina.  |9 9697 
700 1 |a Marzetti, Martín  |u Asociación Argentina de Productores en Siembra Directa (AAPRESID). Programa REM. Rosario, Santa Fé, Argentina.  |9 50623 
700 1 |a Niccia, Eugenia  |u Asociación Argentina de Productores en Siembra Directa (AAPRESID). Programa REM. Rosario, Santa Fé, Argentina.  |9 73863 
773 |t Heliyon  |g Vol.7, no.1 (2021), e06089, 13 p., grafs., tbls., mapas 
856 |f 2021delafuente  |i en Internet  |q application/pdf  |u http://ri.agro.uba.ar/files/download/articulo/2021delafuente.pdf  |x ARTI202206 
856 |u https://www.elsevier.com  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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