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dc.contributor.authorCirujeda Ranzenberger, Alicia
dc.contributor.authorRecasens i Guinjuan, Jordi
dc.contributor.authorTorra Farré, Joel
dc.contributor.authorTaberner Palou, Andreu
dc.date.accessioned2010-09-23T11:40:01Z
dc.date.available2010-09-23T11:40:01Z
dc.date.issued2008
dc.identifier.issn1774-0746
dc.identifier.urihttp://hdl.handle.net/10459.1/10986
dc.description.abstractField poppy, Papaver rhoeas L., is a very common weed in winter cereals in North-Eastern Spain. Its control is becoming difficult due to expanding herbicide resistance. To control field poppies there are alternative strategies such as non-chemical control that take into account the weed emergence period. However, there is a lack of knowledge of P. rhoeas emergence patterns in semi-arid conditions. Thus, here we conducted pot experiments on the emergence of P. rhoeas. We aimed to describe the emergence period and to quantify the emergence of a susceptible and of a herbicide-resistant P. rhoeas population at two locations in Catalonia, Spain, from 1998 to 2001 and until 2004 at one of them. Therefore, pots containing seeds of both populations were established at the two locations and emergence was recorded monthly. We studied the origin of the population, the sowing location, the effect of cultivation and the sowing year. First, we found that the main emergence peaks in our experiments occurred in autumn, accounting for between 65.7 and 98.5% of the annual emergence from October to December, and only little emergence was recorded in spring. This emergence pattern is different from those found in the literature corresponding to Northern European countries, where in some cases main flushes occur only in autumn, in spring and winter or only in spring. The emergence was mainly affected by cultivation, but the effect of light stimulus was observed several months later. As a consequence, cultivation should be done in early autumn, promoting emergence during the whole autumn and winter so that emerged seedlings can be controlled before sowing a spring crop. Second, most experiments showed that the emergence was significantly higher in the first autumn than in the following seasons, e.g. 4.1% emergence in the first year and only 2.1, 2.3, 0.5 and 0.6% new emergence at one of the locations for the second, third, fourth and fifth years. Thus, after having a severe P. rhoeas infestation causing a big seed rain, emergence should be stimulated by autumn cultivation in the following season and seedlings controlled by trying to deplete the soil seed bank as much as possible. Despite the fact that emergence will be staggered throughout several years and that there was a significant relationship between rainfall and emergence, so that dry years will cause a smaller emergence rate of the weed, these findings define a cultural management strategy to reduce P. rhoeas infestations and to contribute to integrated weed management strategies combining it with other tools.ca_ES
dc.language.isoengca_ES
dc.publisherEDP Sciencesca_ES
dc.publisherInstitut national de la recherche agronomique (França)ca_ES
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1051/agro:2007035ca_ES
dc.relation.ispartofAgronomy for Sustainable Development, 2008, vol. 28, núm. 2, p. 207-220ca_ES
dc.rights(c) EDP Sciences, 2008ca_ES
dc.rights(c) Institut national de la recherche agronomique (França), 2008ca_ES
dc.subjectEmergence periodca_ES
dc.subjectPapaver rhoeasca_ES
dc.subjectCultivationca_ES
dc.subjectSeed bankca_ES
dc.subject.otherHerbicidesca_ES
dc.subject.otherMales herbes -- Controlca_ES
dc.titleA germination study of herbicide-resistant field poppies in Spainca_ES
dc.typearticleca_ES
dc.identifier.idgrec013417
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.doihttps://doi.org/10.1051/agro:2007035


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