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dc.contributor.authorGil Moya, Emilio
dc.contributor.authorLlorens Calveras, Jordi
dc.contributor.authorLlop, Jordi
dc.contributor.authorFàbregas, X.
dc.contributor.authorEscolà i Agustí, Alexandre
dc.contributor.authorRosell Polo, Joan Ramon
dc.date.accessioned2016-02-10T11:31:11Z
dc.date.available2016-02-10T11:31:11Z
dc.date.issued2013
dc.identifier.issn0168-1699
dc.identifier.urihttp://hdl.handle.net/10459.1/49471
dc.description.abstractThe structural characteristics of the canopy are a key consideration for improving the efficiency of the spray application process for tree crops. However, obtaining accurate data in an easy, practical, and efficient way is an important problem to be solved. This paper describes the technical characteristics of a sprayer prototype developed for vineyards, following the principles and previous laboratory tests described in the complementary paper Variable rate sprayer. Part 1 – Orchard prototype: design, implementation and validation. This prototype can modify the sprayed volume application rate according to the target geometry by using an algorithm based on the canopy volume inspired by the tree row volume (TRV) model. Variations in canopy width along the row crop are electronically measured using several ultrasonic sensors placed on the sprayer and used to modify the emitted flow rate from the nozzles in real time; the objective during this process is to maintain the sprayed volume per unit canopy volume (L m−3). Field trials carried out at different crop stages for Merlot and Cabernet Sauvignon vines (Vitis vinifera) indicated a good relationship between the applied volume and canopy characteristics. The potential pesticide savings were estimated to be 21.9% relative to the costs of a conventional application. This conclusion is in accordance with the results of similar research on automated spraying systems.ca_ES
dc.description.sponsorshipFunding for this research was provided by the Spanish Ministry of Science and Innovation and the European Regional Development Funds and is part of research projects Optidosa (AGL2007-66093-C04-02/AGR) and Safespray (AGL2010-22304-C04-04).ca_ES
dc.language.isoengca_ES
dc.publisherElsevierca_ES
dc.relationMIECI/PN2004-2007/AGL2007-66093-C04-02/AGRca_ES
dc.relationMICINN/PN2008-2011/AGL2010-22304-C04-04ca_ES
dc.relation.isformatofVersió postprint del document publicat a https://doi.org/10.1016/j.compag.2013.02.010ca_ES
dc.relation.ispartofComputers and Electronics in Agriculture, 2013, vol. 95, p. 136-150ca_ES
dc.rights(c) Elsevier, 2013ca_ES
dc.subjectVariable rate applicationca_ES
dc.subjectUltrasonic sensorsca_ES
dc.subjectCanopy geometryca_ES
dc.subjectVineyardca_ES
dc.subject.otherPolvorització (Agricultura)ca_ES
dc.subject.otherRadar òpticca_ES
dc.titleVariable rate sprayer. Part 2 – Vineyard prototype: design, implementation, and validationca_ES
dc.typearticleca_ES
dc.identifier.idgrec019636
dc.type.versionacceptedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/10.1016/j.compag.2013.02.010


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