Effect of fungicides and alternative products in control of anthracnose and black spot of guava
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/8854 |
Resumo: | This work aimed to evaluate the efficiency of fungicides in controlling in vitro and in vivo the causal agents of anthracnose (Colletotrichum gloeosporioides and C. acutatum) and black spot (Guignardia psidii) and evaluate the effect of alternative products to control these diseases. Inhibition of mycelial growth of the pathogens was evaluated for ten fungicides at concentrations of 1, 10 and 100 mg L-1 of active ingredient in potato-dextrose-agar medium. The effectiveness of the fungicides azoxystrobin + difenoconazole, cyproconazole, pyraclostrobin, tebuconazole and tebuconazole + trifloxystrobin in controlling disease incidence and severity of anthracnose, through applications in the field, was measured in fruits collected at three stages of maturation, according to the skin color (dark green, light green and yellowish green). In postharvest dipping of fruits, the products evaluated were citric acid, peracetic acid, salicylic acid, sodium bicarbonate, chlorine dioxide, Ecolife® and chitosan. The fungicides azoxystrobin + difenoconazole, pyraclostrobin, tebuconazole and trifloxystrobin + tebuconazole were highly effective in inhibiting the in vitro mycelial growth of G. psidii and moderately to highly effective in inhibiting C. acutatum and C. gloeosporioides. In field conditions, the fungicide azoxystrobin + difenoconazole was effective in controlling anthracnose and black spot in fruit at three maturity stage (skin color yellowish green). The alternative products tested were ineffective in the curative control of anthracnose and early blight at postharvest of guava. |
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Effect of fungicides and alternative products in control of anthracnose and black spot of guavaEfeito de fungicidas e produtos alternativos no controle da antracnose e da pinta preta da goiabaPsidium guajavaGuava diseasesColletotrichum spp.Guignardia psidiiManagement.Psidium guajavaDoenças da goiabeiraColletotrichum spp.Guignardia psidiiManejo.5.01.02.00-1 FitossanidadeThis work aimed to evaluate the efficiency of fungicides in controlling in vitro and in vivo the causal agents of anthracnose (Colletotrichum gloeosporioides and C. acutatum) and black spot (Guignardia psidii) and evaluate the effect of alternative products to control these diseases. Inhibition of mycelial growth of the pathogens was evaluated for ten fungicides at concentrations of 1, 10 and 100 mg L-1 of active ingredient in potato-dextrose-agar medium. The effectiveness of the fungicides azoxystrobin + difenoconazole, cyproconazole, pyraclostrobin, tebuconazole and tebuconazole + trifloxystrobin in controlling disease incidence and severity of anthracnose, through applications in the field, was measured in fruits collected at three stages of maturation, according to the skin color (dark green, light green and yellowish green). In postharvest dipping of fruits, the products evaluated were citric acid, peracetic acid, salicylic acid, sodium bicarbonate, chlorine dioxide, Ecolife® and chitosan. The fungicides azoxystrobin + difenoconazole, pyraclostrobin, tebuconazole and trifloxystrobin + tebuconazole were highly effective in inhibiting the in vitro mycelial growth of G. psidii and moderately to highly effective in inhibiting C. acutatum and C. gloeosporioides. In field conditions, the fungicide azoxystrobin + difenoconazole was effective in controlling anthracnose and black spot in fruit at three maturity stage (skin color yellowish green). The alternative products tested were ineffective in the curative control of anthracnose and early blight at postharvest of guava.Os objetivos deste trabalho foram avaliar a eficiência de fungicidas no controle in vitro e in vivo dos agentes causais da antracnose (Colletotrichum gloeosporioides e C. acutatum) e da pinta preta (Guignardia psidii) da goiaba e avaliar o efeito de produtos alternativos no controle pós-colheita destas doenças. A inibição do crescimento micelial dos patógenos foi avaliada para dez fungicidas nas concentrações de 1, 10 e 100 mg L-1 de ingrediente ativo em meio de cultura batata-dextrose-ágar. A eficácia dos fungicidas azoxistrobina + difenoconazol, ciproconazol, piraclostrobina, tebuconazol e tebuconazol + trifloxistrobina, aplicados no campo para o controle da incidência das doenças e da severidade da antracnose, foi avaliada em frutos coletados em três estádios de maturação. Em tratamento pós-colheita, por imersão dos frutos, foram avaliados os produtos ácido cítrico, ácido peracético, ácido salicílico, bicarbonato de sódio, dióxido de cloro, Ecolife® e quitosana. Os fungicidas azoxistrobina + difenoconazol, piraclostrobina, tebuconazol e tebuconazol + trifloxistrobina foram altamente eficientes em inibir o crescimento micelial in vitro de G. psidii e moderadamente a altamente eficientes em inibir C. acutatum e C. gloeosporioides. Em condições de campo, o fungicida azoxistrobina + difenoconazol foi eficiente no controle da antracnose e da pinta preta em frutos no estádio 3 de maturação (cor da casca verde-amarela). Os produtos testados no controle curativo pós-colheita da antracnose e da pinta preta foram ineficazes dentro das condições avaliadas. UEL2012-12-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/885410.5433/1679-0359.2012v33n6Supl1p2753Semina: Ciências Agrárias; Vol. 33 No. 6Supl1 (2012); 2753-2766Semina: Ciências Agrárias; v. 33 n. 6Supl1 (2012); 2753-27661679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/8854/11771Fischer, Ivan HermanSilva, Bruna Lourenço daSoares, Ana RaquelPalharini, Maria Cecília de ArrudaParisi, Marise Cagnin MartinsAmorin, Lilianinfo:eu-repo/semantics/openAccess2015-11-19T18:37:09Zoai:ojs.pkp.sfu.ca:article/8854Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:37:09Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava Efeito de fungicidas e produtos alternativos no controle da antracnose e da pinta preta da goiaba |
title |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava |
spellingShingle |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava Fischer, Ivan Herman Psidium guajava Guava diseases Colletotrichum spp. Guignardia psidii Management. Psidium guajava Doenças da goiabeira Colletotrichum spp. Guignardia psidii Manejo. 5.01.02.00-1 Fitossanidade |
title_short |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava |
title_full |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava |
title_fullStr |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava |
title_full_unstemmed |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava |
title_sort |
Effect of fungicides and alternative products in control of anthracnose and black spot of guava |
author |
Fischer, Ivan Herman |
author_facet |
Fischer, Ivan Herman Silva, Bruna Lourenço da Soares, Ana Raquel Palharini, Maria Cecília de Arruda Parisi, Marise Cagnin Martins Amorin, Lilian |
author_role |
author |
author2 |
Silva, Bruna Lourenço da Soares, Ana Raquel Palharini, Maria Cecília de Arruda Parisi, Marise Cagnin Martins Amorin, Lilian |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Fischer, Ivan Herman Silva, Bruna Lourenço da Soares, Ana Raquel Palharini, Maria Cecília de Arruda Parisi, Marise Cagnin Martins Amorin, Lilian |
dc.subject.por.fl_str_mv |
Psidium guajava Guava diseases Colletotrichum spp. Guignardia psidii Management. Psidium guajava Doenças da goiabeira Colletotrichum spp. Guignardia psidii Manejo. 5.01.02.00-1 Fitossanidade |
topic |
Psidium guajava Guava diseases Colletotrichum spp. Guignardia psidii Management. Psidium guajava Doenças da goiabeira Colletotrichum spp. Guignardia psidii Manejo. 5.01.02.00-1 Fitossanidade |
description |
This work aimed to evaluate the efficiency of fungicides in controlling in vitro and in vivo the causal agents of anthracnose (Colletotrichum gloeosporioides and C. acutatum) and black spot (Guignardia psidii) and evaluate the effect of alternative products to control these diseases. Inhibition of mycelial growth of the pathogens was evaluated for ten fungicides at concentrations of 1, 10 and 100 mg L-1 of active ingredient in potato-dextrose-agar medium. The effectiveness of the fungicides azoxystrobin + difenoconazole, cyproconazole, pyraclostrobin, tebuconazole and tebuconazole + trifloxystrobin in controlling disease incidence and severity of anthracnose, through applications in the field, was measured in fruits collected at three stages of maturation, according to the skin color (dark green, light green and yellowish green). In postharvest dipping of fruits, the products evaluated were citric acid, peracetic acid, salicylic acid, sodium bicarbonate, chlorine dioxide, Ecolife® and chitosan. The fungicides azoxystrobin + difenoconazole, pyraclostrobin, tebuconazole and trifloxystrobin + tebuconazole were highly effective in inhibiting the in vitro mycelial growth of G. psidii and moderately to highly effective in inhibiting C. acutatum and C. gloeosporioides. In field conditions, the fungicide azoxystrobin + difenoconazole was effective in controlling anthracnose and black spot in fruit at three maturity stage (skin color yellowish green). The alternative products tested were ineffective in the curative control of anthracnose and early blight at postharvest of guava. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-12-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica de Campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/8854 10.5433/1679-0359.2012v33n6Supl1p2753 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/8854 |
identifier_str_mv |
10.5433/1679-0359.2012v33n6Supl1p2753 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/8854/11771 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 33 No. 6Supl1 (2012); 2753-2766 Semina: Ciências Agrárias; v. 33 n. 6Supl1 (2012); 2753-2766 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
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1799306065329782784 |