Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro
Ano de defesa: | 2008 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Viçosa
|
Programa de Pós-Graduação: |
Mestrado em Fitopatologia
|
Departamento: |
Etiologia; Epidemiologia; Controle
|
País: |
BR
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://locus.ufv.br/handle/123456789/4363 |
Resumo: | The aim of this study was to evaluate the removal of mancozeb (Mn), mancozeb NT (NT), and copper hydroxide (Hc) residues from potato and tomato leaflets by rain and/or irrigation. Under controlled conditions different intensities of simulated rain (0, 30, 40, 60, and 97 mm / h), duration (5, 10, 20, and 40 min) and time of drying of the sprayed fungicide suspension (1, 2, 4, 6, and 24 h) were assessed. Greenhouse- grown plants were sprayed with Mn and NT at a rate of 2.4 kg of a.i. / ha and 1.0 kg of Hc a.i. / ha; and let to dry before being taken to the rain simulator. Increasing intensities of simulated rain caused exponential drop of Mn and NT; the same trend was observed for removal of Hc. In both hosts, there was a reduction of residues of all fungicides by increasing the rain duration. No significant difference between the removal of NT and Mn in both potato and tomato leaflets was observed. Increasing dryness time reduced the removal of fungicides residue. After fungicide application, 30 mm / h of rainfall can remove residue from the leaf surface. The deposited fungicide suspension must dry for at least 6h on the leaf surface to avoid the complete removal of fungicide residues by rain or irrigation. Under field conditions, removal of fungicide residues from potato foliage by irrigation and rain was assessed in two trials. The difference between the trials was the amount of water applied in the trial 2: 65mm higher than in the trial 1. The same fungicides and dosages used under controlled conditions were used in the field trials. Two samples were taken at weeks 1 and 2. The linear model described all fungicides removal. In both weeks of the first trial, the removal rate of Mn was higher than that of NT. The late blight severity was low, but in trial 1 all fungicide treatments resulted in less amount of disease than the control when considering the area under the disease progress curve (AUDPC) and maximum severity (P = 0.0001). There was no difference among treatments regarding disease severity in the middle of the epidemics duration (Y50). In the second trial, there was no difference between treatments when comparisons were made in the middle of epidemics, or based in the maximum severity. However, based on the AUDPC, treatments differ from control. |
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Duarte, André Rochahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4753798U3Maffia, Luiz Antôniohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783229P9Silva, Demetrius David dahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786123E5Mizubuti, Eduardo Seiti Gomidehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785633J8Vale, Francisco Xavier Ribeiro dohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788182P7Costa, Hélciohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783779J32015-03-26T13:37:37Z2008-09-252015-03-26T13:37:37Z2008-05-21DUARTE, André Rocha. Removal of fungicides residue by simulated rain and irrigation in potato and tomato. 2008. 43 f. Dissertação (Mestrado em Etiologia; Epidemiologia; Controle) - Universidade Federal de Viçosa, Viçosa, 2008.http://locus.ufv.br/handle/123456789/4363The aim of this study was to evaluate the removal of mancozeb (Mn), mancozeb NT (NT), and copper hydroxide (Hc) residues from potato and tomato leaflets by rain and/or irrigation. Under controlled conditions different intensities of simulated rain (0, 30, 40, 60, and 97 mm / h), duration (5, 10, 20, and 40 min) and time of drying of the sprayed fungicide suspension (1, 2, 4, 6, and 24 h) were assessed. Greenhouse- grown plants were sprayed with Mn and NT at a rate of 2.4 kg of a.i. / ha and 1.0 kg of Hc a.i. / ha; and let to dry before being taken to the rain simulator. Increasing intensities of simulated rain caused exponential drop of Mn and NT; the same trend was observed for removal of Hc. In both hosts, there was a reduction of residues of all fungicides by increasing the rain duration. No significant difference between the removal of NT and Mn in both potato and tomato leaflets was observed. Increasing dryness time reduced the removal of fungicides residue. After fungicide application, 30 mm / h of rainfall can remove residue from the leaf surface. The deposited fungicide suspension must dry for at least 6h on the leaf surface to avoid the complete removal of fungicide residues by rain or irrigation. Under field conditions, removal of fungicide residues from potato foliage by irrigation and rain was assessed in two trials. The difference between the trials was the amount of water applied in the trial 2: 65mm higher than in the trial 1. The same fungicides and dosages used under controlled conditions were used in the field trials. Two samples were taken at weeks 1 and 2. The linear model described all fungicides removal. In both weeks of the first trial, the removal rate of Mn was higher than that of NT. The late blight severity was low, but in trial 1 all fungicide treatments resulted in less amount of disease than the control when considering the area under the disease progress curve (AUDPC) and maximum severity (P = 0.0001). There was no difference among treatments regarding disease severity in the middle of the epidemics duration (Y50). In the second trial, there was no difference between treatments when comparisons were made in the middle of epidemics, or based in the maximum severity. However, based on the AUDPC, treatments differ from control.Estudaram-se os resíduos de mancozeb (Mn), mancozeb NT (NT) e hidróxido de cobre (Hc) em batateira e tomateiro em condições controladas, para analisar a influência de diferentes intensidades (0, 30, 40, 60 e 97 mm/h), duração de chuva simulada (5, 10, 20 e 40 min) e tempo de secagem da calda fungicida (1, 2, 4, 6 e 24 h). Em condições de campo, avaliou-se a remoção de resíduos da folhagem de batateira pela irrigação e chuva em dois ensaios. Sob condições controladas, pulverizaram-se plantas com 45 a 60 dias após o plantio com Mn e NT, ambos a 2,4 kg de i.a./ha, e Hc a 1,0 kg de i.a./ha; a seguir, elas foram submetidas aos tratamentos em simulador de chuvas. Com o aumento da intensidade de chuva simulada, houve queda exponencial de Mn e NT; a mesma tendência foi observada para a remoção de resíduos de Hc. Em ambas as hospedeiras, houve redução de resíduos com o aumento do tempo de duração de chuva, inclusive Hc em tomateiro. Não houve diferença significativa entre as perdas de Mn e NT tanto da superfície foliar de batata quanto de tomate. Quanto maior o tempo de secagem, menor a remoção de resíduos de todos os fungicidas. Os ensaios foram realizados em lavoura de batata e com os mesmos fungicidas. No segundo ensaio, a lâmina de água aplicada foi 65 mm maior que no primeiro. Duas amostragens foram realizadas (semanas 1 e 2). O modelo linear descreveu a remoção de todos os fungicidas. Nas semanas 1 e 2 do primeiro ensaio, a taxa de remoção de Mn foi maior que a de NT. A intensidade de requeima foi baixa, porém a testemunha no E1 diferiu dos tratamentos em relação à área abaixo da curva de progresso da doença (AACPD) e severidade máxima (P= 0,0001). Não houve diferença entre os tratamentos quanto à severidade na metade da epidemia (Y50). No segundo ensaio, não houve diferença entre os tratamentos quanto à severidade máxima, tampouco na metade da epidemia, diferindo apenas quanto à AACPD entre a testemunha e os demais tratamentos. Após a aplicação dos fungicidas, chuvas a partir de 30 mm/h podem remover resíduos de fungicidas da superfície foliar. É necessário tempo de secagem mínimo de 6h para assegurar menor remoção desses resíduos da superfície foliar.Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de ViçosaMestrado em FitopatologiaUFVBREtiologia; Epidemiologia; ControleFungicidasControleTomateBatataChuvasSimulaçãoIrrigaçãoFungicidesControlTomatoPotatoRain simulationIrrigationCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIARemoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiroRemoval of fungicides residue by simulated rain and irrigation in potato and tomatoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf369654https://locus.ufv.br//bitstream/123456789/4363/1/texto%20completo.pdf05b409e311785546899f27d4c2b5add3MD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain67426https://locus.ufv.br//bitstream/123456789/4363/2/texto%20completo.pdf.txt8f0f2a6ffe01e782e2412d08f03329eaMD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3682https://locus.ufv.br//bitstream/123456789/4363/3/texto%20completo.pdf.jpg0a91581b26246122b0c4ddaa821e955bMD53123456789/43632016-04-10 23:09:13.235oai:locus.ufv.br:123456789/4363Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-11T02:09:13LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.por.fl_str_mv |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro |
dc.title.alternative.eng.fl_str_mv |
Removal of fungicides residue by simulated rain and irrigation in potato and tomato |
title |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro |
spellingShingle |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro Duarte, André Rocha Fungicidas Controle Tomate Batata Chuvas Simulação Irrigação Fungicides Control Tomato Potato Rain simulation Irrigation CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA |
title_short |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro |
title_full |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro |
title_fullStr |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro |
title_full_unstemmed |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro |
title_sort |
Remoção de resíduos de fungicidas por meio de chuva simulada e de irrigação em batateira e tomateiro |
author |
Duarte, André Rocha |
author_facet |
Duarte, André Rocha |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4753798U3 |
dc.contributor.author.fl_str_mv |
Duarte, André Rocha |
dc.contributor.advisor-co1.fl_str_mv |
Maffia, Luiz Antônio |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783229P9 |
dc.contributor.advisor-co2.fl_str_mv |
Silva, Demetrius David da |
dc.contributor.advisor-co2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786123E5 |
dc.contributor.advisor1.fl_str_mv |
Mizubuti, Eduardo Seiti Gomide |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785633J8 |
dc.contributor.referee1.fl_str_mv |
Vale, Francisco Xavier Ribeiro do |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788182P7 |
dc.contributor.referee2.fl_str_mv |
Costa, Hélcio |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783779J3 |
contributor_str_mv |
Maffia, Luiz Antônio Silva, Demetrius David da Mizubuti, Eduardo Seiti Gomide Vale, Francisco Xavier Ribeiro do Costa, Hélcio |
dc.subject.por.fl_str_mv |
Fungicidas Controle Tomate Batata Chuvas Simulação Irrigação |
topic |
Fungicidas Controle Tomate Batata Chuvas Simulação Irrigação Fungicides Control Tomato Potato Rain simulation Irrigation CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA |
dc.subject.eng.fl_str_mv |
Fungicides Control Tomato Potato Rain simulation Irrigation |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA |
description |
The aim of this study was to evaluate the removal of mancozeb (Mn), mancozeb NT (NT), and copper hydroxide (Hc) residues from potato and tomato leaflets by rain and/or irrigation. Under controlled conditions different intensities of simulated rain (0, 30, 40, 60, and 97 mm / h), duration (5, 10, 20, and 40 min) and time of drying of the sprayed fungicide suspension (1, 2, 4, 6, and 24 h) were assessed. Greenhouse- grown plants were sprayed with Mn and NT at a rate of 2.4 kg of a.i. / ha and 1.0 kg of Hc a.i. / ha; and let to dry before being taken to the rain simulator. Increasing intensities of simulated rain caused exponential drop of Mn and NT; the same trend was observed for removal of Hc. In both hosts, there was a reduction of residues of all fungicides by increasing the rain duration. No significant difference between the removal of NT and Mn in both potato and tomato leaflets was observed. Increasing dryness time reduced the removal of fungicides residue. After fungicide application, 30 mm / h of rainfall can remove residue from the leaf surface. The deposited fungicide suspension must dry for at least 6h on the leaf surface to avoid the complete removal of fungicide residues by rain or irrigation. Under field conditions, removal of fungicide residues from potato foliage by irrigation and rain was assessed in two trials. The difference between the trials was the amount of water applied in the trial 2: 65mm higher than in the trial 1. The same fungicides and dosages used under controlled conditions were used in the field trials. Two samples were taken at weeks 1 and 2. The linear model described all fungicides removal. In both weeks of the first trial, the removal rate of Mn was higher than that of NT. The late blight severity was low, but in trial 1 all fungicide treatments resulted in less amount of disease than the control when considering the area under the disease progress curve (AUDPC) and maximum severity (P = 0.0001). There was no difference among treatments regarding disease severity in the middle of the epidemics duration (Y50). In the second trial, there was no difference between treatments when comparisons were made in the middle of epidemics, or based in the maximum severity. However, based on the AUDPC, treatments differ from control. |
publishDate |
2008 |
dc.date.available.fl_str_mv |
2008-09-25 2015-03-26T13:37:37Z |
dc.date.issued.fl_str_mv |
2008-05-21 |
dc.date.accessioned.fl_str_mv |
2015-03-26T13:37:37Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
DUARTE, André Rocha. Removal of fungicides residue by simulated rain and irrigation in potato and tomato. 2008. 43 f. Dissertação (Mestrado em Etiologia; Epidemiologia; Controle) - Universidade Federal de Viçosa, Viçosa, 2008. |
dc.identifier.uri.fl_str_mv |
http://locus.ufv.br/handle/123456789/4363 |
identifier_str_mv |
DUARTE, André Rocha. Removal of fungicides residue by simulated rain and irrigation in potato and tomato. 2008. 43 f. Dissertação (Mestrado em Etiologia; Epidemiologia; Controle) - Universidade Federal de Viçosa, Viçosa, 2008. |
url |
http://locus.ufv.br/handle/123456789/4363 |
dc.language.iso.fl_str_mv |
por |
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por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Viçosa |
dc.publisher.program.fl_str_mv |
Mestrado em Fitopatologia |
dc.publisher.initials.fl_str_mv |
UFV |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Etiologia; Epidemiologia; Controle |
publisher.none.fl_str_mv |
Universidade Federal de Viçosa |
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