Herbicide selectivity on macauba seedlings and weed control efficiency

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dc.contributor.authorSantos da Costa, Yanna Karoline [UNESP]
dc.contributor.authorLopes de Freitas, Francisco Claudio
dc.contributor.authorSilveira, Hellen Martins da
dc.contributor.authorMendes Nascimento, Roxana Stefane
dc.contributor.authorSediyama, Carlos Sigueyuki
dc.contributor.authorAlcantara-de la Cruz, Ricardo
dc.contributor.institutionUniversidade Federal de Viçosa (UFV)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-10T17:38:38Z
dc.date.available2020-12-10T17:38:38Z
dc.date.issued2020-10-15
dc.description.abstractSeedlings of macauba (Acrocomia aculeata (Jacq.) Lodd. ex Mart) palm spend similar to 10 months in nursery before being taken to the field. Since there are no registered herbicides for macauba, weed control in seedling containers is done manually; however, macauba leaves have thorns that injure workers' hands. In this work, the selectivity of indaziflam, isoxaflutol, oxyfluorfen and sulfentrazone was evaluated on macauba seedlings produced in nurseries, incorporated (INC) to the substrate and/or applied before (PRE) and after (POST) transplantation, as well as its efficacy for the weed control. Seedlings were no intoxicated by the herbicides regardless of the application method. However, considering the height, leaf area and dry weight and root volume, the INC and PRE applications of indaziflam were not selective for macauba. In contrast, POST-indaziflam applications stimulated the growth of seedlings (< 100 cm), being even greater than the control (75 cm) M 10 months. Regarding weed control, the INC treatments lost effectiveness up to 40 % from 14 to 56 days after application (DAA), except indaziflam which maintained a control above 95 %. Weed control of PRE applications decreased up to 60 % for all four herbicides, while the POST applications of indaziflam, oxyfluorfen and sulfentrazone maintained control levels >= 80 % at the same period. Weed presence reduced the growth rate of macauba seedlings by similar to 40 % (32 cm high in the non-weeding control vs 55 cm in the weeding control) at 126 DAA. In addition, weeds reduced the growth of seedlings in most treatments, since the plant height was similar to the non-weeding control. Isoxaflutole, oxyfluorfen and sulfentrazone were selective for macauba seedlings, regardless of the herbicide application method. Indaziflam was selective for seedlings only in POST applications. The evaluated herbicides were efficient in controlling most weed species up to 56 DAA in PRE and POST applications.en
dc.description.affiliationUniv Fed Vicosa, Dept Fitotecnia, BR-36570900 Vicosa, MG, Brazil
dc.description.affiliationUniv Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, Brazil
dc.description.affiliationUniv Estadual Paulista Julio de Mesquita Melo UN, Fac Ciencias Agr & Vet FCAV, BR-14884900 Jaboticabal, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio de Mesquita Melo UN, Fac Ciencias Agr & Vet FCAV, BR-14884900 Jaboticabal, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.format.extent7
dc.identifierhttp://dx.doi.org/10.1016/j.indcrop.2020.112725
dc.identifier.citationIndustrial Crops And Products. Amsterdam: Elsevier, v. 154, 7 p., 2020.
dc.identifier.doi10.1016/j.indcrop.2020.112725
dc.identifier.issn0926-6690
dc.identifier.urihttp://hdl.handle.net/11449/195557
dc.identifier.wosWOS:000554526900100
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofIndustrial Crops And Products
dc.sourceWeb of Science
dc.subjectAcrocomia aculeata
dc.subjectIndaziflam
dc.subjectIsoxaflutole
dc.subjectOxyfluorfen
dc.subjectSulfentraozne
dc.titleHerbicide selectivity on macauba seedlings and weed control efficiencyen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0001-6302-0947[6]

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