Articles publicats (Grup de Recerca en Malherbologia i Ecologia Vegetal)
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- ItemOpen AccessPrimer caso en Europa de resistencia triple a glifosato, auxinas e inhibidores de la ALS en una población de Bassia scoparia(Sociedade de Ciências Agrárias de Portugal, 2024-04-16) Mora Marin, German; Montull, José María; Llenes , José María; Recasens i Guinjuan, Jordi; Cirujeda, Alicia; Marí , Ana Isabel; Torra Farré, JoelBassia scoparia es una planta anual de la familia Amaranthaceae que se encuentra comúnmente en regiones de América del Norte, Asia y Europa. Ha desarrollado resistencia a varios modos de acción herbicida, incluida la resistencia múltiple, lo que dificulta su control y requiere de una gestión integrada para abordar su problemática. En 2022 se recolectaron semillas de plantas de un campo de cereales de invierno bajo siembra directa, procedentes de Guissona (GUI-R) en Cataluña, supervivientes a tratamientos sucesivos con herbicidas auxínicos e inhibidores de la ALS y EPSPS. La población sensible de referencia procedía de Aragón (A17-S), cosechada en el 2017. Se realizaron ensayos de dosis – respuesta, en plántulas con cuatro hojas (BBCH 14), tres modos de acción herbicida diferentes y toma de datos 28 días después del tratamiento. Las dosis evaluadas de herbicidas para las poblaciones R y S, respectivamente, fueron: glifosato (HRAC 9) dosis entre 135 - 2.160 g e.a. ha-1 y 33.75 - 1.080 g e.a. ha-1, valores GR50 de 255 y 129 g e.a. ha-1, RF de 2 y LD50 de 389 y 1.240 g e.a. ha-1 y RF de 3.2 veces; tifensulfuron (HRAC 2) 7.5 - 480 g e.a ha-1 y 0.24 - 7.5 g e.a. ha-1, valores GR50 de 480 y 3.9 g e.a. ha-1, RF de 123 y LD50 indeterminada por la alta supervivencia de la población R. Actualmente se desarrollan estudios moleculares para dilucidar el mecanismo de resistencia involucrado y ensayos de dosis-respuesta con tres herbicidas auxínicos (HRAC 4): 2,4-D, dicamba y MCPA.
- ItemOpen AccessCover crops terminated with roller-crimper to manage Cynodon dactylon and other weeds in vineyards(John Wiley and Sons Ltd, 2023) Cabrera Pérez, Carlos; Royo-Esnal, Aritz; Català, Bruna; Baraibar Padró, Bàrbara; Recasens i Guinjuan, JordiUsing cover crops in organic vineyards can provide many advantages, including weed suppression. However, their effectiveness may depend on the weed community, the cover crop species and the termination method. The most common practice for cover crop termination is shredding, but rapid residue decomposition can allow noxious species like Cynodon dactylon to proliferate during summer and compete with the vines. The use of roller-crimpers as an alternative method can be effective in some cropping systems, but no studies have focused on their use in the inter-row of vineyards. The objective of this study was to evaluate the effectiveness of seven cover crops (spontaneous, Avena strigosa, Hordeum vulgare, Lolium multiflorum, Phacelia tanacetifolia, Sinapis alba and X Triticosecale) and two termination methods (shredding or roller-crimper) in managing C. dactylon during summer. RESULTS: In 2020, rolled A. strigosa, P. tanacetifolia and the spontaneous flora limited the coverage of C. dactylon more than shredding (increases of 3% and 18% in C. dactylon cover from July to September in rolled and shredded cover crops, respectively), while in 2021, rolling was better than shredding for all cover crop species in September (5% and 18% increases, respectively). CONCLUSION: Roller-crimping cover crops was an effective method to control C. dactylon in vineyard inter-rows but it did not consistently work for all cover crops in both years. Our study is one of the first to test the efficacy of roller-crimpers to manage summer weeds in vineyards. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
- ItemOpen AccessConyza, un género de malas hierbas problemáticas y de difícil control(Eumedia, 2023-10) Recasens i Guinjuan, Jordi; Montull Daniel, José María; Royo-Esnal, Aritz; Conesa i Mor, Josep A. (Josep Antoni)
- ItemOpen AccessHerbicide resistance is increasing in Spain: concomitant management and prevention(MDPI, 2023) Montull Daniel, José María; Torra Farré, JoelHerbicide-resistant weeds currently challenge sustainable food production in almost all cropping systems in Europe. Herbicide resistance is increasing, and some European countries are among the most affected globally, such as Spain and France. This situation is worsening not only due to herbicide use restrictions but also due to climate change, rendering Mediterranean countries such as Spain particularly susceptible. Therefore, focus should be aimed at preventive measures, which include those not only based on integrated weed management strategies but also based on a very good knowledge of the biology and ecology of each weed species. The main objective of this review is to provide an overview of potential future herbicide-resistant cases that can evolve in the near future in Europe. We use Spain as the case study, as it is the most affected country in Europe and because it is at risk due to global warming. For different resistant cases detailed on a crop basis, adequate prevention and management measures will be provided in order to avoid resistance evolution relative to the sites of action that are most likely to generate resistant biotypes due to expected high selection pressures.
- ItemOpen AccessErratum: Palma-Bautista et al. Resistance Mechanisms to 2,4-D in Six Different Dicotyledonous Weeds Around the World. Agronomy 2020, 10, 566(MDPI, 2021) Palma-Bautista, Candelario; Rojano-Delgado, Antonia M.; Dellaferrera, Ignacio; Jesús, Rosario; Vigna, Mario R.; Torra Farré, Joel; Prado, Rafael de