Show simple item record

dc.contributor.authorGonzalez, Luis
dc.contributor.authorTorres Lezcano, Estanis
dc.contributor.authorÀvila, Gloria
dc.contributor.authorBonany, Joan
dc.contributor.authorAlegre Castellví, Simó
dc.contributor.authorCarbó, J.
dc.contributor.authorMartín, Begoña
dc.contributor.authorRecasens Guinjuan, Inmaculada
dc.contributor.authorAsin Jones, Luis
dc.description.abstractThinning is an important technique in apple growing which is used to reduce the number of fruits per plant and achieve commercial fruit size and quality. The objective of this work was to evaluate the efficacy of one and two applications of the chemical thinner Brevis® in Gala apple applied at different fruit sizes and at different intervals between the first and second spray. The trials were conducted over two seasons from 2015 to 2016 in apple orchards of the IRTA experimental agricultural stations of Mas Badia and Lleida (Spain). One or two applications with Brevis® were applied at different fruit sizes (king fruit diameter ranging between 7.5 and 13.5 mm) and at a rate of 1.65 kg/ha for all treatments. Under the trial conditions, a Brevis® thinning effect was observed in all trials with a reduction in crop load, fruit set and number of fruits per tree which varied according to the number of applications. In addition, average fruit weight, color and diameter increased significantly with treatments in which Brevis® reduced the number of fruits per tree. The degree of abscission of Brevis® was highly dependent on night temperature and, for this reason, there was a high degree of variability between trials in terms of efficacy. Our results show that the number of days between applications was not as important a factor for Brevis® efficacy as the difference in night temperature in the days immediately after its application.ca_ES
dc.description.sponsorshipThis study was supported financially by project INIA (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (Spain)) (RTA2012-00116-00-00) in collaboration with ADAMA-Spain.ca_ES
dc.relation.isformatofVersió postprint del document publicat a:
dc.relation.ispartofScientia Horticulturae, 2020, vol. 261, p. 109003ca_ES
dc.rightscc-by-nc-nd, (c) Elsevier, 2019ca_ES
dc.subjectNight temperatureca_ES
dc.subjectFruit abscissionca_ES
dc.subjectCarbohydrate deficitca_ES
dc.subjectCrop loadca_ES
dc.titleEvaluation of chemical fruit thinning efficiency using Brevis® (Metamitron) on apple trees (‘Gala’) under Spanish conditionsca_ES

Files in this item


This item appears in the following Collection(s)

Show simple item record

cc-by-nc-nd, (c) Elsevier, 2019
Except where otherwise noted, this item's license is described as cc-by-nc-nd, (c) Elsevier, 2019