Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Arquivos do instituto biológico (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572020000100219 |
Resumo: | ABSTRACT Intoxication by dispersion of glyphosate droplets in coffee seedlings is common and, in addition to the problem of drift, there are reports of contamination of this herbicide to a nontarget plant via the rhizosphere. Hydroponics allows the comparison of the translocation of the glyphosate absorbed by the foliage or the roots and avoids the interaction with the soil, which could hamper the achievement of more accurate conclusions when it is absorbed by the root. Thus, the toxicity of glyphosate sublethal dosages in the initial growth of coffee plants in hydroponics was evaluated by applying four sublethal dosages in two different locations (solution and leaf). Fifty days after the application of the herbicide, the intoxication percentage and the growth of the coffee seedlings were evaluated. From the reduced dose of 115.2 g·ha-1 of glyphosate, height reductions, root length; number of leaves, dry mass of leaf, roots and total, leaf area, and leaf mass ratio were observed. The first two parameters were observed only in leaf application and the others via leaf and solution. The aerial part–root ratio system had an increase in herbicide sublethal dosages when applied to leaves and the ratio of leaf area and specific leaf area increased in both applications. Sublethal dosages of glyphosate applied to young coffee plants under hydroponic conditions impair their growth, and it is more accentuated with increasing doses and when the leaves, instead of the roots, absorb the herbicide. |
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Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plantsabsorptionCoffea arabicaphytotoxicityhydroponicsABSTRACT Intoxication by dispersion of glyphosate droplets in coffee seedlings is common and, in addition to the problem of drift, there are reports of contamination of this herbicide to a nontarget plant via the rhizosphere. Hydroponics allows the comparison of the translocation of the glyphosate absorbed by the foliage or the roots and avoids the interaction with the soil, which could hamper the achievement of more accurate conclusions when it is absorbed by the root. Thus, the toxicity of glyphosate sublethal dosages in the initial growth of coffee plants in hydroponics was evaluated by applying four sublethal dosages in two different locations (solution and leaf). Fifty days after the application of the herbicide, the intoxication percentage and the growth of the coffee seedlings were evaluated. From the reduced dose of 115.2 g·ha-1 of glyphosate, height reductions, root length; number of leaves, dry mass of leaf, roots and total, leaf area, and leaf mass ratio were observed. The first two parameters were observed only in leaf application and the others via leaf and solution. The aerial part–root ratio system had an increase in herbicide sublethal dosages when applied to leaves and the ratio of leaf area and specific leaf area increased in both applications. Sublethal dosages of glyphosate applied to young coffee plants under hydroponic conditions impair their growth, and it is more accentuated with increasing doses and when the leaves, instead of the roots, absorb the herbicide.Instituto Biológico2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572020000100219Arquivos do Instituto Biológico v.87 2020reponame:Arquivos do instituto biológico (Online)instname:Instituto Biológico (IB)instacron:IBIO10.1590/1808-1657000762018info:eu-repo/semantics/openAccessBarbosa,Edimilson AlvesSilva,Isabel Moreira daFrança,André CabralSilva,Enilson de BarrosMatos,Christiano da Conceição deeng2020-09-14T00:00:00Zoai:scielo:S1808-16572020000100219Revistahttp://www.biologico.sp.gov.br/arquivos_bio.phphttps://old.scielo.br/oai/scielo-oai.php||arquivos@biologico.sp.gov.br1808-16570020-3653opendoar:2020-09-14T00:00Arquivos do instituto biológico (Online) - Instituto Biológico (IB)false |
dc.title.none.fl_str_mv |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants |
title |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants |
spellingShingle |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants Barbosa,Edimilson Alves absorption Coffea arabica phytotoxicity hydroponics |
title_short |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants |
title_full |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants |
title_fullStr |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants |
title_full_unstemmed |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants |
title_sort |
Evaluation of leaf and root absorptions of glyphosate in the growth of coffee plants |
author |
Barbosa,Edimilson Alves |
author_facet |
Barbosa,Edimilson Alves Silva,Isabel Moreira da França,André Cabral Silva,Enilson de Barros Matos,Christiano da Conceição de |
author_role |
author |
author2 |
Silva,Isabel Moreira da França,André Cabral Silva,Enilson de Barros Matos,Christiano da Conceição de |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Barbosa,Edimilson Alves Silva,Isabel Moreira da França,André Cabral Silva,Enilson de Barros Matos,Christiano da Conceição de |
dc.subject.por.fl_str_mv |
absorption Coffea arabica phytotoxicity hydroponics |
topic |
absorption Coffea arabica phytotoxicity hydroponics |
description |
ABSTRACT Intoxication by dispersion of glyphosate droplets in coffee seedlings is common and, in addition to the problem of drift, there are reports of contamination of this herbicide to a nontarget plant via the rhizosphere. Hydroponics allows the comparison of the translocation of the glyphosate absorbed by the foliage or the roots and avoids the interaction with the soil, which could hamper the achievement of more accurate conclusions when it is absorbed by the root. Thus, the toxicity of glyphosate sublethal dosages in the initial growth of coffee plants in hydroponics was evaluated by applying four sublethal dosages in two different locations (solution and leaf). Fifty days after the application of the herbicide, the intoxication percentage and the growth of the coffee seedlings were evaluated. From the reduced dose of 115.2 g·ha-1 of glyphosate, height reductions, root length; number of leaves, dry mass of leaf, roots and total, leaf area, and leaf mass ratio were observed. The first two parameters were observed only in leaf application and the others via leaf and solution. The aerial part–root ratio system had an increase in herbicide sublethal dosages when applied to leaves and the ratio of leaf area and specific leaf area increased in both applications. Sublethal dosages of glyphosate applied to young coffee plants under hydroponic conditions impair their growth, and it is more accentuated with increasing doses and when the leaves, instead of the roots, absorb the herbicide. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572020000100219 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572020000100219 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1808-1657000762018 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Biológico |
publisher.none.fl_str_mv |
Instituto Biológico |
dc.source.none.fl_str_mv |
Arquivos do Instituto Biológico v.87 2020 reponame:Arquivos do instituto biológico (Online) instname:Instituto Biológico (IB) instacron:IBIO |
instname_str |
Instituto Biológico (IB) |
instacron_str |
IBIO |
institution |
IBIO |
reponame_str |
Arquivos do instituto biológico (Online) |
collection |
Arquivos do instituto biológico (Online) |
repository.name.fl_str_mv |
Arquivos do instituto biológico (Online) - Instituto Biológico (IB) |
repository.mail.fl_str_mv |
||arquivos@biologico.sp.gov.br |
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1754193670471417856 |