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Tolerância de plantas de Khaya ivorensis e Toona ciliata a herbicidas

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dc.contributor.author Brighenti, Alexandre Magno
dc.contributor.author Muller, Marcelo Dias
dc.date.accessioned 2015-07-09T14:02:37Z
dc.date.available 2015-07-09T14:02:37Z
dc.date.issued 2014-10
dc.identifier.citation BRIGHENTI, A. M.; MULLER, M. D. Tolerância de plantas de Khaya ivorensis e Toona ciliata a herbicidas. Floresta, Curitiba, v. 44, n. 4, p. 747-754, out./dez. 2014. pt_BR
dc.identifier.issn 1982-4688
dc.identifier.uri http://www.bibliotecaflorestal.ufv.br:80/handle/123456789/14577
dc.description.abstract Dois experimentos foram conduzidos com o objetivo de avaliar a tolerância de plantas mogno-africano (Khaya ivorensis) e cedro-australiano (Toona ciliata var. australis) a herbicidas. O delineamento experimental foi inteiramente casualizado, com quatro repetições. Tratamentos: i) testemunha sem aplicação, ii) imazapyr (25 g i.a. ha-1 ), iii) oxyfluorfen (360 g i.a. ha-1 ), iv) oxyfluorfen (720 g i.a. ha-1 ), v) isoxaflutole (75 g i.a. ha-1 ), vi) isoxaflutole (112,5 g i.a. ha -1 ), vii) chlorimuron-ethyl (7,5 g i.a. ha-1 ) + 0,05% v/v de óleo mineral, viii) chlorimuron-ethyl (12,5 g i.a. ha-1 ) + 0,05% v/v de óleo mineral, ix) imazethapyr (100 g i.a. ha-1 ) e x) nicosulfuron (40 g i.a. ha-1 ). Para o mogno africano, os herbicidas imazapyr (25 g i.a. ha-1 ), oxyfluorfen (360 g i.a. ha-1 ) e chlorimuron-ethyl (7,5 e 12,5 g i.a. ha-1 ) proporcionaram sintomas leves de fitotoxicidade. O oxyfluorfen (720 g i.a. ha-1 ), o imazethapyr e o nicosulfuron foram moderadamente fitotóxicos e o isoxaflutole (75 e 112,5 g i.a. ha-1 ) foi o herbicida mais fitotóxico. Para o cedro australiano, o herbicida imazapyr (25 g i.a. ha-1 ) proporcionou os menores níveis de injúria. O oxyfluorfen, o isoxaflutole, o chlorimuron-ethyl, o imazethapyr e o nicosulfuron proporcionaram altos níveis de fitotoxicidade. pt_BR
dc.description.abstract We conducted two experiments to evaluate the plant tolerance of African mahogany (Khaya ivorensis) and Australian cedar (Toona ciliata var. australis) to herbicides. The experimental arrangement was a completely randomized design, with four replications. The treatments were as follows: i) untreated control, ii) imazapyr (25 g ai ha-1 ), iii) oxyfluorfen (360 g ai ha -1 ), iv) oxyfluorfen (720 g ai ha-1 ), v) isoxaflutole (75g ai ha-1 ), vi) isoxaflutole (112.5 g ai ha-1 ), vii) chlorimuron-ethyl (7.5 g ai ha-1 ) + 0.05% v / v mineral oil, viii) chlorimuron-ethyl (12.5 g ai ha-1 ) + 0.05% v / v mineral oil, ix) imazethapyr (100 g ai ha-1 ), and x) nicosulfuron (40 g ai ha-1 ). For the African mahogany, imazapyr (25 g ai ha-1 ), oxyfluorfen (360 g ai ha-1 ) and chlorimuron-ethyl (7.5 and 12.5 g ai ha-1 ), showed mild symptoms of phytotoxicity. The oxyfluorfen (720 g ai ha-1 ), imazethapyr and nicosulfuron were moderately phytotoxics, and isoxaflutole (75 and 112.5 g ai ha-1 ) was the most phytotoxic herbicide. For Australian cedar, imazapyr (25 g ai ha-1 ) caused low levels of injury. Oxyfluorfen, isoxaflutole, chlorimuron-ethyl, imazethapyr and nicosulfuron were the most phytotoxic herbicides. pt_BR
dc.format 8 páginas pt_BR
dc.language.iso pt_BR pt_BR
dc.publisher Fundação de Pesquisas Florestais do Paraná pt_BR
dc.relation.ispartofseries Floresta:v.44,n.4;
dc.subject.classification Ciências Florestais::Manejo florestal pt_BR
dc.title Tolerância de plantas de Khaya ivorensis e Toona ciliata a herbicidas pt_BR
dc.title Tolerance of Khaya ivorensis and Toona ciliata to herbicides pt_BR
dc.type Artigo pt_BR

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