Intensidade da coloração verde das folhas da grama esmeralda submetida a doses de nitrogênio e ao uso de herbicidas como reguladores de crescimento

dc.contributor.authorGazola, Raíssa Pereira Dinalli [UNESP]
dc.contributor.authorBuzetti, Salatiér [UNESP]
dc.contributor.authorDe Niro Gazola, Rodolfo [UNESP]
dc.contributor.authorDe Castilho, Regina Maria Monteiro [UNESP]
dc.contributor.authorFilho, Marcelo Carvalho Minhoto Teixeira [UNESP]
dc.contributor.authorDe Souza Celestrino, Thiago [UNESP]
dc.contributor.authorDupas, Elisaˆngela [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:02:27Z
dc.date.available2018-12-11T17:02:27Z
dc.date.issued2016-06-01
dc.description.abstractNitrogen (N) is the main nutrient responsible for the green coloration of lawns but also stimulates the growth of the aerial portion of grass, thus increasing mowing expenses. Therefore, herbicides may be used as a growth regulator. The ideal herbicide will reduce lawn height without affecting esthetics. Toward this end, the aim of the present study was to evaluate the green coloration of Emerald grass (Zoysia japonica Steud.) under the effect of different N doses or herbicides used as growth regulators. The study site consisted of randomized blocks containing 20 treatments arranged in a 5×4 factorial design with four treatment groups: four herbicides (glyphosate, imazaquin, imazethapyr, and metsulfuronmethyl, accounting for 200, 420, 80, and 140g ha-1 of the active ingredient, respectively) and the control sample (no herbicide); and three doses of N in the form of urea (5, 10, and 20g m-2), divided into five applications per year, in addition to a treatment without N. Leaf chlorophyll content (LCC) was assessed and the aerial portion of the lawn was measured with digital image analysis. Doses of N ranging from 10 to 20g m-2, divided into five applications a year, provided the lawn with intense green coloration, and the herbicides glyphosate (200g ha-1), imazaquin (420g ha-1), and imazethapyr (80g ha-1) were reported to be suitable for use as growth regulators of the study species, considering maintenance of esthetic quality (green coloration). The digital image analysis of the aerial portion provided more accurate results than use of a chlorophyll meter with regard to the recommendation of both N dose and herbicides to be used as growth regulators of Emerald grass.en
dc.description.affiliationPrograma de Pós-graduação em Agronomia Universidade Estadual Paulista (UNESP)
dc.description.affiliationDepartamento de Fitossanidade Engenharia Rural e Solos (DEFERS) Faculdade de Engenharia Universidade Estadual Paulista (UNESP), Campus de Ilha Solteira, Rua Monção, 226
dc.description.affiliationDepartamento de Fitotecnia Tecnologia de Alimentos e Sócio Economia (DFTASE) Faculdade de Engenharia Universidade Estadual Paulista (UNESP)
dc.description.affiliationUnespPrograma de Pós-graduação em Agronomia Universidade Estadual Paulista (UNESP)
dc.description.affiliationUnespDepartamento de Fitossanidade Engenharia Rural e Solos (DEFERS) Faculdade de Engenharia Universidade Estadual Paulista (UNESP), Campus de Ilha Solteira, Rua Monção, 226
dc.description.affiliationUnespDepartamento de Fitotecnia Tecnologia de Alimentos e Sócio Economia (DFTASE) Faculdade de Engenharia Universidade Estadual Paulista (UNESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2012/04602-2
dc.format.extent984-990
dc.identifierhttp://dx.doi.org/10.1590/0103-8478cr20150276
dc.identifier.citationCiencia Rural, v. 46, n. 6, p. 984-990, 2016.
dc.identifier.doi10.1590/0103-8478cr20150276
dc.identifier.fileS0103-84782016000600984.pdf
dc.identifier.issn1678-4596
dc.identifier.issn0103-8478
dc.identifier.lattes0044905209083349
dc.identifier.orcid0000-0003-3421-7235
dc.identifier.scieloS0103-84782016000600984
dc.identifier.scopus2-s2.0-84964088604
dc.identifier.urihttp://hdl.handle.net/11449/172857
dc.language.isoeng
dc.relation.ispartofCiencia Rural
dc.relation.ispartofsjr0,337
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectDigital imaging
dc.subjectFertilization
dc.subjectGlyphosate
dc.subjectImazaquin
dc.subjectImazethapyr
dc.subjectLawn
dc.subjectLeaf chlorophyll content
dc.subjectMetsulfuron-methyl
dc.subjectZoysia japonica steud
dc.titleIntensidade da coloração verde das folhas da grama esmeralda submetida a doses de nitrogênio e ao uso de herbicidas como reguladores de crescimentopt
dc.title.alternativeNitrogen dose and type of herbicide used for growth regulation on the green coloration intensity of Emerald grassen
dc.typeArtigo
unesp.author.lattes0044905209083349[4]
unesp.author.orcid0000-0003-3421-7235[4]

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