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Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions

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Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions

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dc.contributor.author Moreno, Rosana es_ES
dc.contributor.author Torregrosa, A. es_ES
dc.contributor.author Molto, Enrique es_ES
dc.contributor.author Chueca, Patricia es_ES
dc.date.accessioned 2016-11-11T10:27:51Z
dc.date.available 2016-11-11T10:27:51Z
dc.date.issued 2015-03
dc.identifier.issn 1695-971X
dc.identifier.uri http://hdl.handle.net/10251/73836
dc.description.abstract Spain ranks as the world s leading exporter of citrus for fresh consumption. Manual harvest accounts for 50% of the total production costs. Mechanical harvest would increase labor productivity and benefits of growers. Efficiency of these machines depends on the varieties and operating conditions. Use of abscission chemicals has been promoted to increase the detachment rate of fruit without affecting its quality. This work is aimed at studying whether the mechanical harvest and/or the application of an abscission agent affect the quality and quantity of harvested fruit and tree defoliation under the conditions of citrus cultivation in Spain. Trials were made in a completely randomized experimental design. From 2008 to 2011, different orchards of mandarin and orange trees were sprayed with different doses of ethephon as abscission agent and harvested with a trunk shaker. Harvest related variables (detachment percentage, defoliation and fruit without calyx) were measured. The percentage of fruit detached by the trunk shaker ranged between 70 and 85% and it did not depend on the orchard. The shaker produced minimal damage to the bark when gripped incorrectly. Increased doses of ethephon increased fruit detachment except in Clemenules orchard, but also increased the fruit without calyx in 1-9%. Moreover, ethephon promoted significant defoliation. Neither gummosis nor death of branches was observed. This work demonstrates that mechanical harvesting with trunk shakers may be a feasible solution for citrus cultivated in Spain for fresh market. Use of ethephon could only be recommended for citrus destined to industry and only for certain varieties. es_ES
dc.description.sponsorship This work was partially funded by Instituto Valenciano de lnvestigaciones Agrarias (IVIA), Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria de Espana (INIA) and by the European Regional Development Fund (project RTA2009-00118-C02-02). en_EN
dc.language Inglés es_ES
dc.publisher Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) es_ES
dc.relation Instituto Valenciano de lnvestigaciones Agrarias (IVIA) es_ES
dc.relation Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria de Espana (INIA) es_ES
dc.relation European Regional Development Fund RTA2009-00118-C02-02 es_ES
dc.relation.ispartof Spanish Journal of Agricultural Research es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Mechanization es_ES
dc.subject Orange (Citrus sinsensis (L.) Osb) es_ES
dc.subject Clementine (Citrus clementina Hort. ex Tan.) es_ES
dc.subject Ethephon es_ES
dc.subject Eficiency es_ES
dc.subject.classification INGENIERIA AGROFORESTAL es_ES
dc.title Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.5424/sjar/2015131-6590
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural - Escola Tècnica Superior d'Enginyeria Agronòmica i del Medi Natural es_ES
dc.description.bibliographicCitation Moreno, R.; Torregrosa, A.; Molto, E.; Chueca, P. (2015). Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions. Spanish Journal of Agricultural Research. 13(1):1-12. doi:10.5424/sjar/2015131-6590 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion https://dx.doi.org/10.5424/sjar/2015131-6590 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 12 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 13 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 282469 es_ES


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