Modelling emergence of sterile oat (Avena sterilis spp. ludoviciana) under semi-arid conditions

dc.contributor.authorSousa Ortega, Carlos
dc.contributor.authorRoyo-Esnal, Aritz
dc.contributor.authorLoureiro, Iñigo
dc.contributor.authorMarí, Ana Isabel
dc.contributor.authorLezáun San Martín, Juan Antonio
dc.contributor.authorCordero, Fernando
dc.contributor.authorSaavedra, Milagros
dc.contributor.authorParamio, José Antonio
dc.contributor.authorFernández, José Luis
dc.contributor.authorTorra Farré, Joel
dc.contributor.authorUrbano, José María
dc.date.accessioned2022-03-07T10:34:53Z
dc.date.available2022-03-07T10:34:53Z
dc.date.issued2021
dc.date.updated2022-03-07T10:34:53Z
dc.description.abstractWinter wild oat [Avena sterilis ssp. ludoviciana (Durieu) Gillet & Magne; referred to as A. sterilis here] is one of the major weed species of the Avena genus, given its high competitive ability to infest cereal crops worldwide, with special concern in Spain. A nine-location field experiment was established across Spain where a total of 400 A. sterilis seeds per location were sowed in four replicates in autumn 2016 to monitor the emergence during two growing seasons in dryland conditions. The data were used to test the prediction ability of previously published thermal (TT) and hydrothermal time (HTT) models and to develop new models, if required. Overall, the average percentage of emergence was 30% during the first season and 21% during the second season. In both seasons, the main emergence flush occurred between November and February. According to the phenological stage, A. sterilis achieved the tillering earlier in southern sites, between November 25 and the end of December, compared with northern sites, where this stage was reached at the end of January. The newly developed model described the emergence with precision, using three cardinal temperatures to estimate the TT. The three cardinal points were established at −1.0, 5.8, and 18.0 C for base (T b), optimum (T o), and ceiling temperature (T c), while the base water potential (Ψb) was established at −0.2 MPa for the HTT estimation. This study contributes to improving prediction of the emergence of A. sterilis and provides knowledge for decision support systems (DSS) for the control of this weed.
dc.description.sponsorshipWe would like to thank first the funding institutions, Cátedra Adama and the Spanish Weed Science Society (SEMh), with special mention of Cátedra Adama, which financed the article publishing charges. Also, JT acknowledges support from the Spanish Ministry of Science, Innovation and Universities (grant Ramon y Cajal RYC2018-023866-I). We also want to thank the students and the technicians that have helped with the fieldwork for this experiment in different sites, without whose help data collection would have been more difficult. No conflicts of interest have been declared.
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1017/wsc.2021.10
dc.identifier.idgrec031873
dc.identifier.issn0043-1745
dc.identifier.urihttp://hdl.handle.net/10459.1/73199
dc.language.isoeng
dc.publisherWeed Science Society of America
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1017/wsc.2021.10
dc.relation.ispartofWeed Science, 2021, vol. 69, p. 341-352
dc.rightscc-by (c) Sousa et al., 2021
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectHydrothermal model
dc.subjectPhenology
dc.subjectRMSE
dc.subjectSeedling emergence model
dc.subjectWeibull
dc.subjectWinter wild oat
dc.titleModelling emergence of sterile oat (Avena sterilis spp. ludoviciana) under semi-arid conditions
dc.typeinfo:eu-repo/semantics/article
dc.type.versionpublishedVersion
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
031873.pdf
Size:
1.12 MB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: