Post-Emergence Herbicidal Activity of Nanoatrazine Against Susceptible Weeds

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dc.contributor.authorSousa, Gustavo F. M.
dc.contributor.authorGomes, Diego G.
dc.contributor.authorCampos, Estefania V. R.
dc.contributor.authorOliveira, Jhones L.
dc.contributor.authorFraceto, Leonardo F.
dc.contributor.authorStoll-Moreira, Renate
dc.contributor.authorOliveira, Halley C.
dc.contributor.institutionUniversidade Estadual de Londrina (UEL)
dc.contributor.institutionState Univ Paulista Julio de Mesquite Filho
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-04T12:42:46Z
dc.date.available2019-10-04T12:42:46Z
dc.date.issued2018-03-14
dc.description.abstractPot(epsilon-caprolactone) (PCL) nanocapsules have been previously developed as a carrier system for atrazine. However, the efficacy of this nanoformulation against weeds commonly found in crop cultures has not been tested yet. Here, we evaluated the post-emergence herbicidal activity of PCL nanocapsules containing atrazine against Amaranthus viridis (slender amaranth) and Bidens pilosa (hairy beggarticks), in comparison with a commercial formulation of atrazine. For both species, treatment with atrazine-loaded nanocapsules (at 2,000 g ha(-1)) led to a greater decrease in the photosystem II activity (above 50% inhibition relative to the control) than the commercial atrazine formulation at the same concentration (around 40% inhibition). The growth of A. viridis plants was equally reduced by nanoatrazine and commercial formulation (above 64% for root and 75% for shoot). In the case of B. pilosa, atrazine-loaded nanocapsules decreased more effectively the root and shoot growth than the commercial formulation, leading to a loss of plant biomass. Moreover, for both species, the use of 10-fold diluted atrazine-loaded PCL nanocapsules (200 g ha(-1)) resulted in the same inhibitory effect in root and shoot growth as the commercial formulation at the standard atrazine dose. These results suggest that the utilization3 of atrazine-containing PCL nanocapsules potentiated the post-emergence control of A. viridis and B. pilosa by the herbicide. Thus, this nanoformulation emerges as an efficient alternative for weed control.en
dc.description.affiliationUniv Estadual Londrina, Dept Anim & Rant Biol, Londrina, Brazil
dc.description.affiliationState Univ Paulista Julio de Mesquite Filho, Dept Environm Engn, Sorocaba, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipState University of Londrina
dc.description.sponsorshipIdFAPESP: 2014/20286-9
dc.description.sponsorshipIdFAPESP: 2015/15617-9
dc.format.extent6
dc.identifierhttp://dx.doi.org/10.3389/fenvs.2018.00012
dc.identifier.citationFrontiers In Environmental Science. Lausanne: Frontiers Media Sa, v. 6, 6 p., 2018.
dc.identifier.doi10.3389/fenvs.2018.00012
dc.identifier.urihttp://hdl.handle.net/11449/186194
dc.identifier.wosWOS:000452101500001
dc.language.isoeng
dc.publisherFrontiers Media Sa
dc.relation.ispartofFrontiers In Environmental Science
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAmaranthus viridis
dc.subjectBidens Ouse
dc.subjectnanopesticides
dc.subjectnanotechnology
dc.subjectpolymeric nanoparticles
dc.subjecttrianize herbicides
dc.titlePost-Emergence Herbicidal Activity of Nanoatrazine Against Susceptible Weedsen
dc.typeArtigo
dcterms.rightsHolderFrontiers Media Sa

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