Role of organosilicone surfactant in apple scab control under scab conducive weather conditions

dc.contributor.authorHolb, I. J.
dc.date.accessioned2021-06-28T10:00:39Z
dc.date.available2021-06-28T10:00:39Z
dc.date.issued2008-05-19
dc.description.abstractFungicides of integrated fruit production (dithianon, captan, and diclofluanid) and an organosilicone surfactant were compared in spray schedules from green tip until summer in order to control apple scab caused by Venturia inaequalis and to evaluate their phytotoxicity on fruit. Sixteen sprays of 1.8 kg ha -1 captan, 0.41 ha -1 dithianon, and 1.8 kg ha -1 diclolfluanid significantly (P=0.05) reduced the incidence of leaf or fruit scab compared to unsprayed products. All fungicides applied with organosilicone at 0.1% resulted in lower incidence of scab on young and older leaves as well as on harvested fruit, but these were not statistically always better than fungicides applied alone. In case of diclofluanid, the fungicide applied with organosilicone at 0.1% resulted in significantly lower (P = 0.001) incidence of scab on young and older leaves. Diclofluanid applied with organosilicone at 0.1% gave the best scab control on leaf and fruit. Treatments applied with fungicides alone had no significant effect on plant phytotoxicity compared to untreated control. All fungicides applied with organosilicone at 0.1% increased (P = 0.05) fruit damage compared to untreated control or fungicide applied alone, though these were not always significantly different. In case of percentage of fruit russet, treatment of dithianon 0.4 1/ha + 0.1% organosilicone significantly increased fruit russet, while fruit russet index significantly increased in the treatment of diclofluanid 1.8 kg/ha + 0.1% organosilicone compared to untreated control. In sum, application of surfactants can help to increase efficacy of scab fungicides; and consequently, to reduce the risk of fungus infection under high scab disease pressure. This fact may also be helpful in fungicide resistance management and reduced-spray programs with accurate scab warning systems.en
dc.formatapplication/pdf
dc.identifier.citationInternational Journal of Horticultural Science, Vol. 14 No. 3 (2008) , 23-25.
dc.identifier.doihttps://doi.org/10.31421/IJHS/14/3/797
dc.identifier.eissn2676-931X
dc.identifier.issn1585-0404
dc.identifier.issue3
dc.identifier.jatitleInt. j. hortic. sci.
dc.identifier.jtitleInternational Journal of Horticultural Science
dc.identifier.urihttps://hdl.handle.net/2437/314506en
dc.identifier.volume14
dc.languageen
dc.relationhttps://ojs.lib.unideb.hu/IJHS/article/view/797
dc.rights.accessOpen Access
dc.rights.ownerInternational Journal of Horticultural Science
dc.subjectapple scaben
dc.subjectfruit russeten
dc.subjectsurfactanten
dc.subjectorganosiliconeen
dc.subjectintegrated fruit productionen
dc.subjectphytotoxictyen
dc.titleRole of organosilicone surfactant in apple scab control under scab conducive weather conditionsen
dc.typefolyóiratcikkhu
dc.typearticleen
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