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dc.contributor.authorAndújar, Dionisio
dc.contributor.authorEscolà i Agustí, Alexandre
dc.contributor.authorDorado, José
dc.contributor.authorFernández-Quintanilla, César
dc.date.accessioned2016-02-10T12:47:58Z
dc.date.available2016-02-10T12:47:58Z
dc.date.issued2011
dc.identifier.issn0043-1737
dc.identifier.urihttp://hdl.handle.net/10459.1/49472
dc.description.abstractA new approach is described for automatic discrimination between grasses and broad-leaved weeds, based on their heights. An ultrasonic sensor was mounted on the front of a tractor, pointing vertically down in the inter-row area, with a control system georeferencing and registering the echoes reflected by the ground or by the various leaf layers. Static measurements were taken at locations with different densities of grasses (Sorghum halepense) and broad-leaved weeds (Xanthium strumarium and Datura spp.). The sensor readings permitted the discrimination of pure stands of grasses (up to 81% success) and pure stands of broad-leaved weeds (up to 99% success). Moreover, canonical discriminant analysis revealed that the ultrasonic data could separate three groups of assemblages: pure stands of broad-leaved weeds (lower height), pure stands of grasses (higher height) and mixed stands of broad-leaved and grass weeds (medium height). Dynamic measurements confirmed the potential of this system to detect weed infestations. This technique offers significant promise for the development of real-time spatially selective weed control techniques, either as the sole weed detection system or in combination with other detection tools.ca_ES
dc.description.sponsorshipThis research was funded by the Spanish CICyT (project AGL 2008-04670-C03).ca_ES
dc.language.isoengca_ES
dc.publisherJohn Wiley & Sonsca_ES
dc.relationMICINN/PN2008-2011/AGL2008-04670-C03ca_ES
dc.relation.isformatofVersió preprint del document publicat a https://doi.org/10.1111/j.1365-3180.2011.00876.xca_ES
dc.relation.ispartofWeed Research, 2011, vol. 51, núm. 6, p. 543-547ca_ES
dc.rights(c) Andújar et al., 2011ca_ES
dc.rights(c) European Weed Research Society, 2011ca_ES
dc.subjectWeed species discriminationca_ES
dc.subjectSite-specific weed managementca_ES
dc.subjectWide-row cropsca_ES
dc.subjectUltrasound detectionca_ES
dc.subject.otherSensorsca_ES
dc.subject.otherMales herbes -- Controlca_ES
dc.titleWeed discrimination using ultrasonic sensorsca_ES
dc.typearticleca_ES
dc.identifier.idgrec016750
dc.type.versionsubmittedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/10.1111/j.1365-3180.2011.00876.x


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