Diquat associated with copper sources for algae control: Efficacy and ecotoxicology

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dc.contributor.authorGarlich, Nathalia [UNESP]
dc.contributor.authorDa Cruz, Claudinei
dc.contributor.authorDa Silva, Adilson F. [UNESP]
dc.contributor.authorCarraschi, Silvia P.
dc.contributor.authorMalaspina, Igor C. [UNESP]
dc.contributor.authorPitelli, Robinson A. [UNESP]
dc.contributor.authorBianco, Silvano [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionBarretos Educ Fdn
dc.contributor.institutionFisheries Inst Sao Paulo
dc.date.accessioned2018-11-26T16:19:28Z
dc.date.available2018-11-26T16:19:28Z
dc.date.issued2016-04-02
dc.description.abstractABSTARCTThe aims of this research were to evaluate the efficacy of copper oxychloride (CuCl2.3Cu(OH)(2)), copper hydroxide (Cu(OH)(2)) and diquat (1.1-ethylene-2.2-bipyridyldiylium dibromide), isolated and in association with 0.1% of both copper sources, in the control of the unicellular algae Ankistrodesmus gracilis and the filamentous algae Pithophora kewesis, and to determine the acute toxicity of the tested chemicals in Hyphressobrycon eques, Pomacea canaliculata, Lemna minor and Azolla caroliniana. The efficacy was estimated by the methods of chlorophyll a and pheophytin a readings, changed into growth inhibition percentage. Both algae were exposed to the following concentrations: 0.2; 0.4; 0.8; 1.2mg L-1 of diquat and its association with the copper sources; and 0.1; 0.3; 0.5; 0.7; 1.0 and 1.5mg L-1 in the isolated applications of copper hydroxide and copper oxychloride. An untreated control was kept. The acute toxicity was estimatedby 50% lethal concentration (LC50). The copper sources were effective for A. gracilis control, at rates as high as 0.1mg L-1 (>95% efficacy). Isolated diquat and its association with copper hydroxide were both effective at rates as high as 0.4mg L-1, with 95 and 88% control efficacy, respectively. The copper oxychloride was effective at 0.2mg L-1, with 93% efficacy. None of the tested chemicals and associations was effective on P. kewesis control. The most sensitive non target organism to the tested chemicals was L. minor; the less sensitive was H. eques.en
dc.description.affiliationSao Paulo State Univ, Coll Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationBarretos Educ Fdn, Univ Ctr, Barretos, SP, Brazil
dc.description.affiliationFisheries Inst Sao Paulo, Sao Paulo, Brazil
dc.description.affiliationSao Paulo State Univ, Ctr Coll Agr & Vet Sci, Weed Sci Environm Res Studies, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationSao Paulo State Univ, Dept Appl Biol, Coll Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Coll Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Ctr Coll Agr & Vet Sci, Weed Sci Environm Res Studies, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Appl Biol, Coll Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil
dc.format.extent215-221
dc.identifierhttp://dx.doi.org/10.1080/03601234.2015.1120611
dc.identifier.citationJournal Of Environmental Science And Health Part B-pesticides Food Contaminants And Agricultural Wastes. Philadelphia: Taylor & Francis Inc, v. 51, n. 4, p. 215-221, 2016.
dc.identifier.doi10.1080/03601234.2015.1120611
dc.identifier.fileWOS000369491900002.pdf
dc.identifier.issn0360-1234
dc.identifier.urihttp://hdl.handle.net/11449/161184
dc.identifier.wosWOS:000369491900002
dc.language.isoeng
dc.publisherTaylor & Francis Inc
dc.relation.ispartofJournal Of Environmental Science And Health Part B-pesticides Food Contaminants And Agricultural Wastes
dc.relation.ispartofsjr0,420
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectAlgaecide
dc.subjectchemical substances
dc.subjectenvironmental assessment
dc.subjectsecondary effect
dc.titleDiquat associated with copper sources for algae control: Efficacy and ecotoxicologyen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderTaylor & Francis Inc

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Artigos - Biologia - FCAV