Laboratory evaluation of tween 20 for potential use in control of cacopsylla pyri l. eggs and nymphs (Homoptera: Psyllidae)

dc.contributor.buuauthorPehlevan, Bilgi
dc.contributor.buuauthorKovancı, Orkun Barış
dc.contributor.departmentZiraat Fakültesi
dc.contributor.departmentBitki Koruma Bölümü
dc.date.accessioned2021-04-13T11:38:41Z
dc.date.available2021-04-13T11:38:41Z
dc.date.issued2016-10-10
dc.description.abstractThe toxicity of the Tween 20, also known as polyoxyethylene (20) sorbitan monolaurate, was evaluated against the summerform pear psylla Cacopsylla pyri (L.) (Homoptera: Psyllidae) under laboratory conditions. Tween 20 was applied at 1, 2, 3, 7, 10, 20 and 30 ml/l concentrations onto eggs and nymphs of C. pyri on pear shoots. Water was used as a control treatment. The toxic effect on eggs and nymphs was determined by counting treated eggs and nymphs, live or dead. Despite low toxicity to psyllid eggs, Tween 20 showed significant toxic effects against nymphs. The mortality rates of eggs were 3.2%, 2.1%, 1.0%, 12.8%, 13.5%, 100.0%, 100.0% at 1, 2, 3, 7, 10, 20 and 30 ml/l concentrations, respectively. The highest toxic activity was recorded at concentrations of 20 and 30 ml/l. The mortality rates of nymphs were 7.2%, 21.0%, 49.9%, 96.5%, 100.0%, 96.5%, and 100.0% at above concentrations in the same order, respectively. Tween 20 at 3, 7, 10, 20 and 30 ml/l concentrations showed the highest toxic activity to psyllid nymphs, while concentrations of 1 and 2 ml/l had the lowest toxicity compared to water control. No significant phytotoxic effect was observed at all concentrations except for concentrations at 20 and 30 ml/l. In conclusion, Tween 20, either alone or in combination with pesticides, may provide an effective alternative to control pear psylla nymphs.en_US
dc.identifier.citationPehlevan, B. ve Kovancı, O. B. (2016). "Laboratory evaluation of tween 20 for potential use in control of cacopsylla pyri l. eggs and nymphs (Homoptera: Psyllidae)". Journal of Biological and Environmental Sciences, 10(29), 39-43.tr_TR
dc.identifier.endpage43tr_TR
dc.identifier.issn1307-9530
dc.identifier.issn1308-2019
dc.identifier.issue29tr_TR
dc.identifier.startpage39tr_TR
dc.identifier.urihttp://jbes.uludag.edu.tr/PDFDOSYALAR/29/mak01.pdf
dc.identifier.urihttp://hdl.handle.net/11452/19594
dc.identifier.volume10tr_TR
dc.language.isoenen_US
dc.publisherUludağ Üniversitesitr_TR
dc.relation.journalJournal of Biological and Environmental Sciencestr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergitr_TR
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectTween 20tr_TR
dc.subjectSoapstr_TR
dc.subjectCacopsylla pyritr_TR
dc.subjectToxicityen_US
dc.subjectDetergentsen_US
dc.subjectSurfactantsen_US
dc.subjectPearen_US
dc.titleLaboratory evaluation of tween 20 for potential use in control of cacopsylla pyri l. eggs and nymphs (Homoptera: Psyllidae)en_US
dc.typeArticleen_US
local.contributor.departmentZiraat Fakültesi/Bitki Koruma Bölümütr_TR

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