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http://hdl.handle.net/1843/52299
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DC Field | Value | Language |
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dc.creator | Samuel Alves dos Santos | pt_BR |
dc.creator | Leonardo David Tuffi Santos | pt_BR |
dc.creator | Acelino Couto Alfenas | pt_BR |
dc.creator | Autieres Teixeira Faria | pt_BR |
dc.creator | Bruno Francisco Sant'Anna Santos | pt_BR |
dc.date.accessioned | 2023-04-19T22:10:54Z | - |
dc.date.available | 2023-04-19T22:10:54Z | - |
dc.date.issued | 2019 | - |
dc.citation.volume | 37 | pt_BR |
dc.citation.issue | 1 | pt_BR |
dc.citation.spage | 10 | pt_BR |
dc.identifier.doi | https://doi.org/10.1590/S0100-83582019370100024 | pt_BR |
dc.identifier.issn | 1806-9681 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/1843/52299 | - |
dc.description.abstract | A deriva dos herbicidas carfentrazone-ethyl e glyphosate pode afetar o crescimento inicial do eucalipto. Este trabalho objetivou avaliar o efeito da deriva de carfentrazone-ethyl e glyphosate sobre a fotossíntese, a morfoanatomia foliar e o crescimento inicial de dois clones de Eucalyptus grandis. Foram realizados dois ensaios em esquema fatorial 2 x 4, sendo o fator 1 representado por dois clones de E. grandis, e o fator 2, por quatro subdoses dos herbicidas (testemunha, 86,4 g e.a. ha-1 de glyphosate, 3,0 g e.a. ha-1 de carfentrazone-ethyl e a mistura de 86,4 g e.a. ha-1 de glyphosate + 3,0 g e.a. ha-1 de carfentrazone-ethyl). A aplicação dos herbicidas foi feita simulando deriva no terço inferior da copa das mudas. As avaliações foram realizadas 23 dias após aplicação. Os dois clones apresentaram alterações morfoanatômicas, como erosão de ceras epicuticulares, degeneração de células epidérmicas e parenquimáticas, sobretudo quando expostas à subdose de carfentrazone-ethyl ou de sua mistura com glyphosate. O clone CLR 383 foi o mais afetado pelos herbicidas testados e apresentou maior injúria, menor crescimento inicial, menor massa seca e maior redução na taxa fotossintética quando tratado com a mistura, seguida das subdoses de carfentrazone-ethyl e glyphosate, respectivamente. O crescimento inicial em altura, a massa seca e a fotossíntese do clone CLR 384 não foram afetados pela subdose isolada de carfentrazone-ethyl. Os resultados deste trabalho permitem concluir que os dois herbicidas, aplicados de forma isolada ou em mistura, reduzem o crescimento inicial, a massa seca e a fotossíntese em plantas de eucalipto. | pt_BR |
dc.description.resumo | Drift of the herbicides carfentrazone-ethyl and glyphosate may affect the initial growth of eucalyptus. This study aimed to assess the effect of carfentrazoneethyl and glyphosate drift on photosynthesis, leaf morphoanatomy, and initial growth of two clones of Eucalyptus grandis. Two experiments were carried out in a 2 x 4 factorial scheme, in which factor 1 was represented by two clones of E. grandis and factor 2 by four herbicide underdoses (control, 86.4 g a.e. ha-1 of glyphosate, 3.0 g a.e. ha-1 of carfentrazone-ethyl, and the mixture of 86.4 g a.e. ha-1 of glyphosate + 3.0 g a.e. ha-1 of carfentrazone-ethyl). Herbicide application was carried out by simulating the drift in the lower third of seedling canopy. Assessments were performed 23 days after herbicide application. Both clones presented morphoanatomical changes such as erosion of epicuticular waxes and degeneration of epidermal and parenchymal cells, especially when exposed to carfentrazone-ethyl underdose or its mixture with glyphosate. The clone CLR 383 was the most affected by the tested herbicides and presented the highest injury, lowest initial growth, lowest dry matter, and highest reduction of photosynthetic rate when treated with herbicide mixture, followed by carfentrazone-ethyl and glyphosate underdoses. The initial growth, dry matter, and photosynthesis of the clone CLR 384 were not affected by the carfentrazone-ethyl underdose. Thus, both herbicides applied in isolation or in a mixture reduced the initial growth, dry matter, and photosynthesis of eucalyptus. | pt_BR |
dc.language | eng | pt_BR |
dc.publisher | Universidade Federal de Minas Gerais | pt_BR |
dc.publisher.country | Brasil | pt_BR |
dc.publisher.department | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS | pt_BR |
dc.publisher.initials | UFMG | pt_BR |
dc.relation.ispartof | Planta Daninha | - |
dc.rights | Acesso Aberto | pt_BR |
dc.subject | Leaf morphoanatomy | pt_BR |
dc.subject | Phytointoxication | pt_BR |
dc.subject | Eucalyptus | pt_BR |
dc.subject | Photosynthesis | pt_BR |
dc.subject.other | Eucalipto | pt_BR |
dc.subject.other | Fotossintese | pt_BR |
dc.subject.other | Analise foliar | pt_BR |
dc.title | Differential tolerance of clones of Eucalyptus grandis exposed to drift of the herbicides carfentrazone-ethyl and glyphosate | pt_BR |
dc.title.alternative | Tolerância diferencial em clones de Eucalyptus grandis expostos à deriva dos herbicidas carfentrazone-ethyl e glyphosate | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.url.externa | https://www.scielo.br/j/pd/a/xmQHdzGYqWNgXXRskHD5LHS/?lang=en | pt_BR |
Appears in Collections: | Artigo de Periódico |
Files in This Item:
File | Description | Size | Format | |
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Differential tolerance of clones of eucalyptus grandis exposed to drift of the herbicides carfentrazone-ethyl and glyphosate_Leonardo David Tuffi Santos_FARIA.pdf | 4.62 MB | Adobe PDF | View/Open |
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