Copper formulations in bacterial blight control and toxic effects on coffee seedlings
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bioscience journal (Online) |
Texto Completo: | https://seer.ufu.br/index.php/biosciencejournal/article/view/55641 |
Resumo: | Bacterial blight of coffee (Pseudomonas syringae pv. garcae) is an important coffee disease and can be controlled using antibiotics and copper-based compounds. However, copper-based compounds raise doubts among coffee growers regarding bacterial blight control efficiency and phytotoxic potential. In this work, coffee plants were sprayed with different copper molecules in order to study their efficiency on bacterial blight control and the phytotoxic potential. Seven copper formulations, cuprous oxide, copper oxychloride, copper nitrate, copper hydroxide 1 (water-dispersible granules) and 2 (concentrated suspension), copper sulfate 1 (complexed with gluconic acid) and 2 (Bordeaux mixture) were studied. The copper formulations efficiency was compared with the antibiotic kasugamycin, saline solution, and control. In controlled environmental conditions of temperature, relative humidity, and photoperiod, coffee seedlings were sprayed with the treatments and after 24 hours they were inoculated with Pseudomonas syringae pv. garcae suspension. Disease incidence and severity assessments were performed in a 2-day interval during a 16-day period. Phytotoxicity incidence and severity, mapping, and quantification of copper on the leaf tissue surface, dried leaves weight, and total copper leaf content were assessed 16 days after pathogen inoculation. Data were submitted to the Scott-Knott test (p < 0.05). Cuprous oxide and copper sulfate 2 proved most efficient to bacterial blight control, causing lower phytotoxicity effect, best covering, and persistence on leaf tissues. Copper nitrate and copper sulfate complexed with gluconic acid were more phytotoxicity compared to other copper formulations. |
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Copper formulations in bacterial blight control and toxic effects on coffee seedlingsFormulações de cobre no controle da mancha aureolada e efeitos fitotóxicos em mudas de cafeeiroAntibioticBacteriaChemical ControlIncidencePhytotoxicityPseudomonas syringae pv. garcae. Agricultural SciencesBacterial blight of coffee (Pseudomonas syringae pv. garcae) is an important coffee disease and can be controlled using antibiotics and copper-based compounds. However, copper-based compounds raise doubts among coffee growers regarding bacterial blight control efficiency and phytotoxic potential. In this work, coffee plants were sprayed with different copper molecules in order to study their efficiency on bacterial blight control and the phytotoxic potential. Seven copper formulations, cuprous oxide, copper oxychloride, copper nitrate, copper hydroxide 1 (water-dispersible granules) and 2 (concentrated suspension), copper sulfate 1 (complexed with gluconic acid) and 2 (Bordeaux mixture) were studied. The copper formulations efficiency was compared with the antibiotic kasugamycin, saline solution, and control. In controlled environmental conditions of temperature, relative humidity, and photoperiod, coffee seedlings were sprayed with the treatments and after 24 hours they were inoculated with Pseudomonas syringae pv. garcae suspension. Disease incidence and severity assessments were performed in a 2-day interval during a 16-day period. Phytotoxicity incidence and severity, mapping, and quantification of copper on the leaf tissue surface, dried leaves weight, and total copper leaf content were assessed 16 days after pathogen inoculation. Data were submitted to the Scott-Knott test (p < 0.05). Cuprous oxide and copper sulfate 2 proved most efficient to bacterial blight control, causing lower phytotoxicity effect, best covering, and persistence on leaf tissues. Copper nitrate and copper sulfate complexed with gluconic acid were more phytotoxicity compared to other copper formulations.A mancha aureolada (Pseudomonas syringae pv. garcae) é uma importante doença do cafeiro e pode ser controlada com antibióticos e compostos à base de cobre. Entretanto, compostos à base de cobre levantam dúvidas entre os cafeicultores em relação à sua eficiência de controle e ao seu potencial fitotóxico. Neste trabalho, mudas de café foram pulverizadas com diferentes moléculas de cobre a fim de estudar sua eficiência no controle da mancha aureolada e seu potencial fitotóxico. Foram utilizadas sete formulações de cobre, óxido cuproso, oxicloreto de cobre, nitrato de cobre, hidróxido de cobre 1 (grânulos dispersáveis em água) e 2 (suspensão concentrada), sulfato de cobre 1 (complexado com ácido glucônico) e 2 (mistura de bordeaux). A eficiência das formulações de cobre foi comparada com o antibiótico Kasugamicina, solução salina e controle. Em condições ambientais controladas, as mudas de café foram pulverizadas com os tratamentos e após 24 horas foram inoculadas com a suspensão de Pseudomonas syringae pv. garcae. As avaliações de incidência e severidade da doença foram realizadas em um intervalo de dois dias durante o período de 16 dias. A incidência e a severidade da fitotoxicidade, o mapeamento e a quantificação de cobre na superfície do tecido foliar, o peso das folhas secas e o teor total de cobre nas folhas foram avaliados 16 dias após a inoculação do patógeno. Os dados foram submetidos ao teste de Scott-Knott (p> 0,5). O óxido cuproso e o sulfato de cobre 2 mostraram-se mais eficientes no controle da mancha aureolada, causando menor efeito fitotóxico, melhor cobertura e persistência nos tecidos foliares. O Nitrato de cobre e o sulfato de cobre complexado com ácido glucônico apresentaram maior fitotoxicidade em comparação as outras formulações de cobre utilizadas.EDUFU2022-09-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/5564110.14393/BJ-v38n0a2022-55641Bioscience Journal ; Vol. 38 (2022): Continuous Publication; e38043Bioscience Journal ; v. 38 (2022): Continuous Publication; e380431981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/55641/34594Brazil; Contemporary Copyright (c) 2022 Marcelo Loran de Oliveira Freitas, Edson Ampélio Pozza, Helon Santos Neto, Adelia Aziz Alexandre Pozza, Leônidas Leoni Belan, Humberson Rocha da Silva , Paulo Estevão de Souza https://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessLoran de Oliveira Freitas, MarceloAmpélio Pozza, EdsonSantos Neto, HelonAziz Alexandre Pozza, AdeliaLeoni Belan, LeônidasRocha da Silva , HumbersonEstevão de Souza , Paulo2022-09-23T14:36:36Zoai:ojs.www.seer.ufu.br:article/55641Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-09-23T14:36:36Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings Formulações de cobre no controle da mancha aureolada e efeitos fitotóxicos em mudas de cafeeiro |
title |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings |
spellingShingle |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings Loran de Oliveira Freitas, Marcelo Antibiotic Bacteria Chemical Control Incidence Phytotoxicity Pseudomonas syringae pv. garcae. Agricultural Sciences |
title_short |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings |
title_full |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings |
title_fullStr |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings |
title_full_unstemmed |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings |
title_sort |
Copper formulations in bacterial blight control and toxic effects on coffee seedlings |
author |
Loran de Oliveira Freitas, Marcelo |
author_facet |
Loran de Oliveira Freitas, Marcelo Ampélio Pozza, Edson Santos Neto, Helon Aziz Alexandre Pozza, Adelia Leoni Belan, Leônidas Rocha da Silva , Humberson Estevão de Souza , Paulo |
author_role |
author |
author2 |
Ampélio Pozza, Edson Santos Neto, Helon Aziz Alexandre Pozza, Adelia Leoni Belan, Leônidas Rocha da Silva , Humberson Estevão de Souza , Paulo |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Loran de Oliveira Freitas, Marcelo Ampélio Pozza, Edson Santos Neto, Helon Aziz Alexandre Pozza, Adelia Leoni Belan, Leônidas Rocha da Silva , Humberson Estevão de Souza , Paulo |
dc.subject.por.fl_str_mv |
Antibiotic Bacteria Chemical Control Incidence Phytotoxicity Pseudomonas syringae pv. garcae. Agricultural Sciences |
topic |
Antibiotic Bacteria Chemical Control Incidence Phytotoxicity Pseudomonas syringae pv. garcae. Agricultural Sciences |
description |
Bacterial blight of coffee (Pseudomonas syringae pv. garcae) is an important coffee disease and can be controlled using antibiotics and copper-based compounds. However, copper-based compounds raise doubts among coffee growers regarding bacterial blight control efficiency and phytotoxic potential. In this work, coffee plants were sprayed with different copper molecules in order to study their efficiency on bacterial blight control and the phytotoxic potential. Seven copper formulations, cuprous oxide, copper oxychloride, copper nitrate, copper hydroxide 1 (water-dispersible granules) and 2 (concentrated suspension), copper sulfate 1 (complexed with gluconic acid) and 2 (Bordeaux mixture) were studied. The copper formulations efficiency was compared with the antibiotic kasugamycin, saline solution, and control. In controlled environmental conditions of temperature, relative humidity, and photoperiod, coffee seedlings were sprayed with the treatments and after 24 hours they were inoculated with Pseudomonas syringae pv. garcae suspension. Disease incidence and severity assessments were performed in a 2-day interval during a 16-day period. Phytotoxicity incidence and severity, mapping, and quantification of copper on the leaf tissue surface, dried leaves weight, and total copper leaf content were assessed 16 days after pathogen inoculation. Data were submitted to the Scott-Knott test (p < 0.05). Cuprous oxide and copper sulfate 2 proved most efficient to bacterial blight control, causing lower phytotoxicity effect, best covering, and persistence on leaf tissues. Copper nitrate and copper sulfate complexed with gluconic acid were more phytotoxicity compared to other copper formulations. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-09 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/55641 10.14393/BJ-v38n0a2022-55641 |
url |
https://seer.ufu.br/index.php/biosciencejournal/article/view/55641 |
identifier_str_mv |
10.14393/BJ-v38n0a2022-55641 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/55641/34594 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Brazil; Contemporary |
dc.publisher.none.fl_str_mv |
EDUFU |
publisher.none.fl_str_mv |
EDUFU |
dc.source.none.fl_str_mv |
Bioscience Journal ; Vol. 38 (2022): Continuous Publication; e38043 Bioscience Journal ; v. 38 (2022): Continuous Publication; e38043 1981-3163 reponame:Bioscience journal (Online) instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Bioscience journal (Online) |
collection |
Bioscience journal (Online) |
repository.name.fl_str_mv |
Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
biosciencej@ufu.br|| |
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1797069082916290560 |