L’objectiu del grup és aprofundir en el coneixement biològic de les males herbes i en l’establiment de bases ecològiques per al control integrat de les mateixes. Una de les línies de treball desenvolupada durant els darrers anys ha estat l’estudi de poblacions de males herbes de cereals d’hivern com el margall (Lolium rigidum), la rosella (Papaver rhoeas) o la rèvola (Galium spp.), en concret l’estudi del seu comportament germinatiu, dels factors que influencien en el seu comportament demogràfic, les variacions espacials i temporals d’aquests paràmetres, així com la seva dinàmica poblacional en funció de diferents mètodes de control. Així mateix, el grup estudia també el comportament ecològic de males herbes de recent introducció i que han esdevingut invasores en els nostres conreus. L’interès creixent en la preservació de la biodiversitat dels ecosistemes agrícoles, ens ha empès a iniciar una darrera línia de recerca sobre l’estudi, des d’una perspectiva ecològica, del paper de les males herbes en els agrosistemes. El grup manté convenis amb empreses de fitosanitaris i realitza serveis específics en temes de malherbologia com ara controls de qualitat de la composició de lots comercials de llavors per hidrosembra, identificació precoç de males herbes en camp, o la detecció de poblacions resistents a herbicides. [Més informació].

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  • Management of herbicide resistant corn poppy (Papaver rhoeas) under different tillage systems does not change the frequency of resistant plants 

    Torra Farré, Joel; Royo-Esnal, Aritz; Rey Caballero, Jordi; Recasens i Guinjuan, Jordi; Salas, Marisa (Weed Science Society of America, 2018-07-05)
    Corn poppy (Papaver rhoeas L.) is the most widespread broadleaf weed species infesting winter cereals in Europe. Biotypes that are resistant to both 2,4-D and tribenuron-methyl, an acetolactate synthase (ALS)-inhibitor, ...
  • Camelina as rotation crop for weed control in organic farming in a semi-arid Mediterranean climate 

    Royo-Esnal, Aritz; Valencia-Gredilla, Francisco (MDPI, 2018-10-24)
    Crop rotation in winter cereals in semiarid Mediterranean climates is highly desirable to prevent weed infestations, but the climatic conditions make it difficult to implement alternative crops to winter cereals. Camelina ...
  • Rigput brome (Bromus diandrus Roth.) management in a no tilled field in Spain 

    Royo-Esnal, Aritz; Recasens i Guinjuan, Jordi; Garrido, Jesús; Torra Farré, Joel (MDPI, 2018-11-04)
    The adoption of no-till (NT) in the semi-arid region of Mediterranean Spain has promoted a weed vegetation change, where rigput brome (Bromus diandrus Roth) represents a main concern. In order to avoid complete reliance ...
  • Reviewing research priorities in weed ecology, evolution and management: a horizon scan 

    Neve, P.; Barney, J. N.; Buckley, Y.; Cousens, R. D.; Graham, S.; Jordan, N. R.; Lawton-Rauh, A.; Liebman, M.; Mesgaran, M. B.; Schut, M.; Shaw, J.; Storkey, J.; Baraibar Padró, Bàrbara; Baucom, R. S.; Chalak, M.; Childs, D. Z.; Christensen, S.; Eizenberg, H.; Fernandez Quintanilla, C.; French, K.; Marsch, M.; Heijting, S.; Harrison, L.; Loddo, D.; Macel, M.; Maczey, N.; Merotto, A.; Mortensen, D.; Necajeva, J.; Peltzer, D. A.; Recasens i Guinjuan, Jordi; Renton, M.; Riemens, M.; Sonderskov, M.; Williams, M. (Wiley, 2018)
    Weedy plants pose a major threat to food security, biodiversity, ecosystem services and consequently to human health and wellbeing. However, many currently used weed management approaches are increasingly unsustainable. ...
  • Harvester ant nest distribution depends on soil disturbance regime 

    Baraibar Padró, Bàrbara; Torra Farré, Joel; Royo-Esnal, Aritz; Recasens i Guinjuan, Jordi; Comas Rodríguez, Carles (Elsevier, 2018-09-17)
    Nest densities of harvester ants (Messor barbarus) are high in rain-fed cereal fields in north-eastern Spain where the ants remove large quantities of seeds, contributing to reductions in weed populations. The distribution ...
  • Seedling emergence response of rare arable plants to soil tillage varies by species 

    Torra Farré, Joel; Royo-Esnal, Aritz; Recasens i Guinjuan, Jordi (Public Library of Science, 2018-06-25)
    Very little information is available on emergence of rare arable plants (RAP) in relation to soil disturbance and seed burial conditions in Europe. This information is essential to design conservation and soil management ...
  • Integración de métodos químicos y culturales para el manejo de Bromus diandrus en cereales de invierno 

    Recasens i Guinjuan, Jordi (Mapama, 2014)
    Antiguamente el Bromus diandrus no era una especie problemática en los cereales de invierno, estando su presencia restringida a los linderos y ambientes ruderales. Sin embargo, la introducción de sistemas de laboreo de ...
  • Using the response-effect trait framework to quantify the value of fallow patches in agricultural landscapes to pollinators 

    Robleño Moreno, Irene; Storkey, Jonathan; Solé Senan, Xavier Oriol; Recasens i Guinjuan, Jordi (Wiley, 2018-02-10)
    Questions: What is the role of managed fallow habitats in providing resources for pollination services in agricultural landscapes? How is resource provision affected by fallow management and landscape structure? Can the ...
  • Weed resistance to synthetic auxin herbicides 

    Busi, Roberto; Goggin, Danica E.; Heap, Ian; Horak, Michael; Jugulam, Mithila; Masters, Robert; Napier, Richard; Riar, Dilpreet S.; Satchivi, Norbert; Torra Farré, Joel; Westra, Philip; Wright, Terry R. (JohnWiley & Sons Ltd, 2018)
    Herbicides classified as synthetic auxins have been most commonly used to control broadleaf weeds in a variety of crops and in non-cropland areas since the first synthetic auxin herbicide (SAH), 2,4-D, was introduced to ...
  • Management Options for Multiple Herbicide–Resistant Corn Poppy (Papaver rhoeas) in Spain 

    Rey Caballero, Jordi; Royo-Esnal, Aritz; Recasens i Guinjuan, Jordi; González, Ignacio; Torra Farré, Joel (Weed Science Society of America, 2017)
    Corn poppy is the most widespread broadleaf weed infesting winter cereals in Europe. Biotypes that are resistant (R) to both 2,4-D and tribenuron-methyl have evolved in recent decades, thus complicating their chemical ...
  • Fallow management for steppe bird conservation: the impact of cultural practices on vegetation structure and food resources 

    Robleño Moreno, Irene; Bota, Gerard; Giralt, David; Recasens i Guinjuan, Jordi (Springer Verlag, 2017)
    The potential of fallow lands to favor farmland bird conservation is widely recognized. Since fallows provide key resources for birds within the agricultural matrix, such as nesting sites, shelter and forage, complete ...
  • Describing Polygonum aviculare emergence in different tillage systems 

    Royo-Esnal, Aritz; García, Addy Laura; Torra Farré, Joel; Forcella, Frank; Recasens i Guinjuan, Jordi (European Weed Research Society, 2015)
    Effects of four tillage systems (direct drill, subsoiler, chisel plough and mouldboard plough) on the dynamics of Polygonum aviculare populations were studied over three growing seasons. Cumulative emergence on a weekly ...
  • Weed seed fate during summer fallow: The importance of seed predation and seed burial 

    Baraibar Padró, Bàrbara; Canadell, Claudia; Torra Farré, Joel; Royo-Esnal, Aritz; Recasens i Guinjuan, Jordi (Weed Science Society of America, 2017)
    Maximizing weed seed exposure to seed predators by delaying post-harvest tillage has been suggested as a way to increase weed seed loss to predation in arable fields. However, in some areas of northeastern Spain, fields ...
  • A survey of Lolium rigidum populations in citrus orchards: Factors explaining infestation levels 

    Atanackovic, Valentina; Juárez Escario, Alejandro; Recasens i Guinjuan, Jordi; Torra Farré, Joel (Weed Science Society of Japan, 2015)
    The presence of herbicide-resistant Lolium rigidum in Mediterranean (Spanish) citrus orchards was reported in 2005 and it poses a serious threat to crop management. The main objective of this research was to investigate ...
  • Emergence of field pennycress (Thlaspi arvense L.): Comparison of two accessions and modelling 

    Royo-Esnal, Aritz; Necajeva, Jevgenija; Torra Farré, Joel; Recasens i Guinjuan, Jordi; Gesch, Russell W. (Elsevier B.V., 2015)
    Many weed species are becoming rare due to intense agricultural management, which leads to a decrease of biodiversity in agroecosystems. Cultivating some of these species for their oilseed content may help preserve them ...
  • Germination ecology of five arable Ranunculaceae species 

    Torra Farré, Joel; Royo-Esnal, Aritz; Recasens i Guinjuan, Jordi (European Weed Research Society, 2015-10)
    Germination and emergence are critical life stages for annual plants and so their full understanding is essential for managing arable plant populations. This study investigated the most important species-specific environmental ...
  • Effect of patch size on seed removal by harvester ants 

    Torra Farré, Joel; Atanackovic, Valentina; Blanco Moreno, J.; Royo-Esnal, Aritz; Westerman, Paula Renate (European Weed Research Society, 2016-02)
    The harvester ant Messor barbarus can be responsible for high weed seed losses in dryland cereals in Spain. Because weeds occur in patches, harvester ants have to be able to find and exploit patches. However, seed patches ...
  • Target-site and non-target-site resistance mechanisms to ALS inhibiting herbicides in Papaver rhoeas 

    Rey Caballero, Jordi; Menéndez, Julio; Osuna, Maria D.; Salas, Marisa; Torra Farré, Joel (Elsevier, 2017-03-02)
    Target-site and non-target-site resistance mechanisms to ALS inhibitors were investigated in multiple resistant (tribenuron-methyl and 2,4-D) and only 2,4-D resistant, Spanish corn poppy populations. Six amino-acid ...
  • Modeling the emergence of three arable bedstraw (Galium) species 

    Royo-Esnal, Aritz; Torra Farré, Joel; Conesa i Mor, Josep A. (Josep Antoni); Forcella, Frank; Recasens i Guinjuan, Jordi (Weed Science Society of America, 2010-03)
    Multiyear Field data from Spain were used to model seedling emergence for three bedstraw species (Galium) that can coexist in winter cereal fields. The relationships between cumulative emergence and both growing degree ...
  • Characterisation of emergence of autumn and spring cohorts of Galium spp. in winter cereals 

    Royo-Esnal, Aritz; Torra Farré, Joel; Conesa i Mor, Josep A. (Josep Antoni); Recasens i Guinjuan, Jordi (European Weed Research Society, 2010)
    The emergence of three artificial cohorts of Galium aparine, G. spurium and G. tricornutum with different accessions was studied over two years under the climatic conditions of north-eastern Spain. Seeds were sown in ...

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