Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/31761 |
Resumo: | The brown eye spot and rust are the main diseases of coffee, causing defoliation and, consequently, lower productivity and loss of beverage quality. Moreover, soil fertility is directly correlated with the emergence of these diseases and the equilibrium of soil bases such as Ca, Mg, and K may predispose plants to fungal infection. In addition, chemical control is used to control diseases in the field. Thus, two experiments were carried out in the field to verify the epidemiology and form of control for rust and brown eye spot in leaves and fruits using soil fertility and chemical control. In the first experiment, the objective was to evaluate the temporal progress of the disease and its relationship with plant nutrition and soil fertility in drip irrigated crops using geostatistics. The incidence of the disease was evaluated in 100 fruits in the middle third of five plants / sampling point, performed 30 days before harvest and at harvest dates: April 20 and May 20, 2015, totaling two evaluations. This interval was necessary to verify the distribution of the disease over time. Soil productivity and soil fertility were also evaluated at each point annually. The incidence of the disease in the sampled sites was plotted and the semivariograms models were adjusted and the data interpolated by ordinary kriging, thus constructing the maps of the disease, production and soil fertility for the macronutrients % Mg, % K, Ca / Mg, and Ca / K. In the regions with higher incidence, the higher participation of Mg and K in the CEC pH 7 of the soil was observed, especially when the Ca / Mg and Ca / K ratios decreased, which made Ca unavailable to the plant. The areas with lower productivity had a higher incidence of the disease. The incidence of brown eye spot in coffee fruits in drip irrigation ranged from 0 to 17% between April and May 2015. There was a variation in the incidence of the disease throughout space, with spatial dependence and the presence of foci. The second experiment aimed to evaluate the control of these diseases with systemic fungicide associated or not with copper-based protectors. Seventeen evaluations were performed at monthly intervals of the incidence of rust and brown eye spot on coffee leaves. The size and distribution of the copper particles of each product with Mastersizer 2000® equipment and the pH of the syringes with digital pH meter were also evaluated. After statistical analysis, it was concluded that the association of copper and systemic fungicides was efficient in the control of brown eye spot. There is a difference between copperbased products in the control of rust and brown eye spot, the pH of the syrup increases with time in all the mixtures and losses of productivity in high levels of rust and brown eye spot reaches more than 50% less when compared to the control with fungicides. No symptoms of phytotoxicity were observed. |
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Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiroBlending of systemic fungicides and cupper compounds and space-time analysis of coffee diseasesCercospora coffeicolaHemileia vastatrixCafeeiro - FerrugemGeoestatísticaFungicidas cúpricosGeoestatisticsCoffee - RustCopper fungicidesFitopatologiaThe brown eye spot and rust are the main diseases of coffee, causing defoliation and, consequently, lower productivity and loss of beverage quality. Moreover, soil fertility is directly correlated with the emergence of these diseases and the equilibrium of soil bases such as Ca, Mg, and K may predispose plants to fungal infection. In addition, chemical control is used to control diseases in the field. Thus, two experiments were carried out in the field to verify the epidemiology and form of control for rust and brown eye spot in leaves and fruits using soil fertility and chemical control. In the first experiment, the objective was to evaluate the temporal progress of the disease and its relationship with plant nutrition and soil fertility in drip irrigated crops using geostatistics. The incidence of the disease was evaluated in 100 fruits in the middle third of five plants / sampling point, performed 30 days before harvest and at harvest dates: April 20 and May 20, 2015, totaling two evaluations. This interval was necessary to verify the distribution of the disease over time. Soil productivity and soil fertility were also evaluated at each point annually. The incidence of the disease in the sampled sites was plotted and the semivariograms models were adjusted and the data interpolated by ordinary kriging, thus constructing the maps of the disease, production and soil fertility for the macronutrients % Mg, % K, Ca / Mg, and Ca / K. In the regions with higher incidence, the higher participation of Mg and K in the CEC pH 7 of the soil was observed, especially when the Ca / Mg and Ca / K ratios decreased, which made Ca unavailable to the plant. The areas with lower productivity had a higher incidence of the disease. The incidence of brown eye spot in coffee fruits in drip irrigation ranged from 0 to 17% between April and May 2015. There was a variation in the incidence of the disease throughout space, with spatial dependence and the presence of foci. The second experiment aimed to evaluate the control of these diseases with systemic fungicide associated or not with copper-based protectors. Seventeen evaluations were performed at monthly intervals of the incidence of rust and brown eye spot on coffee leaves. The size and distribution of the copper particles of each product with Mastersizer 2000® equipment and the pH of the syringes with digital pH meter were also evaluated. After statistical analysis, it was concluded that the association of copper and systemic fungicides was efficient in the control of brown eye spot. There is a difference between copperbased products in the control of rust and brown eye spot, the pH of the syrup increases with time in all the mixtures and losses of productivity in high levels of rust and brown eye spot reaches more than 50% less when compared to the control with fungicides. No symptoms of phytotoxicity were observed.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)A cercosporiose e a ferrugem são as principais doenças do cafeeiro, causam desfolha, menor produtividade e perda na qualidade da bebida. A fertilidade do solo está correlacionada com o surgimento dessas doenças e o equilíbrio das bases do solo Ca, Mg e K podem predispor as plantas à infecção de fungos. Assim o controle químico é empregado para o controle das doenças no campo. Portanto, foram realizados dois experimentos, com objetivo de verificar a epidemiologia e forma de controle para a ferrugem e cercosporiose em folhas e frutos utilizando a fertilidade do solo e o controle químico. No primeiro experimento, objetivou-se avaliar o progresso espaço temporal da doença e a sua relação com a nutrição de plantas e a fertilidade do solo em lavouras irrigadas por gotejamento, empregando a geoestatística. A incidência da doença foi avaliada em 100 frutos, realizadas 30 dias antes da colheita e na colheita. Avaliou-se em cada ponto, produtividade e a fertilidade do solo. As incidências das doença nos pontos amostrados foram plotadas e realizou-se o ajuste de modelos de semivariogramas e a interpolação dos dados por krigagem ordinária, construí-se os mapas da doença, da produção e da fertilidade do solo para os macronutrientes %Mg, %K, Ca/Mg e Ca/K. Nas regiões de maior incidência foram observadas a maior participação de Mg e K na CTC pH 7 do solo e quando estreitou as relações Ca/Mg e Ca/K acentuou-se indisponibilidade do Ca para a planta. E as áreas com menor produtividade apresentavam maior incidência da doença. A incidência da cercosporiose em frutos de café , variou de 0 a 17% entre Abril a Maio de 2015. Houve variação na incidência da doença ao longo do espaço, com dependência espacial e a presença de focos. E no segundo experimento objetivou-se avaliar o controle das doenças com fungicida sistêmico associado ou não com protetores à base de cobre. Realizou-se dezessete avaliações em intervalos mensais da incidência da ferrugem e da cercosporiose em folhas do cafeeiro. Analisou-se o tamanho e a distribuição das partículas de cobre e o pH das caldas. Portanto a associação de fungicidas cúpricos aos sistêmicos foi eficiente no controle da cercosporiose, há diferença entre os produtos à base de cobre no controle da ferrugem e da cercosporiose, o pH da calda aumenta com o tempo em todas as misturas e perdas de produtividade em altos níveis das doenças superam 50% se comparado com o controle com fungicidas.Universidade Federal de LavrasPrograma de Pós-Graduação em Agronomia/FitopatologiaUFLAbrasilDepartamento de FitopatologiaPozza, Edson AmpélioSouza, Paulo Estevão deRezende, Mário Lúcio Vilela deAlves, Marcelo de CarvalhoGuimarães, Rubéns JoséFreitas, Aurivan Soares dePaula, Paulo Victor Augusto Azevedo de2018-11-16T15:17:53Z2018-11-16T15:17:53Z2018-11-162018-08-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfPAULA, P. V. A. A. de. Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro. 2018. 122 p. Tese (Doutorado em Agronomia/Fitopatologia)-Universidade Federal de Lavras, Lavras, 2018.http://repositorio.ufla.br/jspui/handle/1/31761porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2019-04-23T15:59:00Zoai:localhost:1/31761Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-04-23T15:59Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro Blending of systemic fungicides and cupper compounds and space-time analysis of coffee diseases |
title |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro |
spellingShingle |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro Paula, Paulo Victor Augusto Azevedo de Cercospora coffeicola Hemileia vastatrix Cafeeiro - Ferrugem Geoestatística Fungicidas cúpricos Geoestatistics Coffee - Rust Copper fungicides Fitopatologia |
title_short |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro |
title_full |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro |
title_fullStr |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro |
title_full_unstemmed |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro |
title_sort |
Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro |
author |
Paula, Paulo Victor Augusto Azevedo de |
author_facet |
Paula, Paulo Victor Augusto Azevedo de |
author_role |
author |
dc.contributor.none.fl_str_mv |
Pozza, Edson Ampélio Souza, Paulo Estevão de Rezende, Mário Lúcio Vilela de Alves, Marcelo de Carvalho Guimarães, Rubéns José Freitas, Aurivan Soares de |
dc.contributor.author.fl_str_mv |
Paula, Paulo Victor Augusto Azevedo de |
dc.subject.por.fl_str_mv |
Cercospora coffeicola Hemileia vastatrix Cafeeiro - Ferrugem Geoestatística Fungicidas cúpricos Geoestatistics Coffee - Rust Copper fungicides Fitopatologia |
topic |
Cercospora coffeicola Hemileia vastatrix Cafeeiro - Ferrugem Geoestatística Fungicidas cúpricos Geoestatistics Coffee - Rust Copper fungicides Fitopatologia |
description |
The brown eye spot and rust are the main diseases of coffee, causing defoliation and, consequently, lower productivity and loss of beverage quality. Moreover, soil fertility is directly correlated with the emergence of these diseases and the equilibrium of soil bases such as Ca, Mg, and K may predispose plants to fungal infection. In addition, chemical control is used to control diseases in the field. Thus, two experiments were carried out in the field to verify the epidemiology and form of control for rust and brown eye spot in leaves and fruits using soil fertility and chemical control. In the first experiment, the objective was to evaluate the temporal progress of the disease and its relationship with plant nutrition and soil fertility in drip irrigated crops using geostatistics. The incidence of the disease was evaluated in 100 fruits in the middle third of five plants / sampling point, performed 30 days before harvest and at harvest dates: April 20 and May 20, 2015, totaling two evaluations. This interval was necessary to verify the distribution of the disease over time. Soil productivity and soil fertility were also evaluated at each point annually. The incidence of the disease in the sampled sites was plotted and the semivariograms models were adjusted and the data interpolated by ordinary kriging, thus constructing the maps of the disease, production and soil fertility for the macronutrients % Mg, % K, Ca / Mg, and Ca / K. In the regions with higher incidence, the higher participation of Mg and K in the CEC pH 7 of the soil was observed, especially when the Ca / Mg and Ca / K ratios decreased, which made Ca unavailable to the plant. The areas with lower productivity had a higher incidence of the disease. The incidence of brown eye spot in coffee fruits in drip irrigation ranged from 0 to 17% between April and May 2015. There was a variation in the incidence of the disease throughout space, with spatial dependence and the presence of foci. The second experiment aimed to evaluate the control of these diseases with systemic fungicide associated or not with copper-based protectors. Seventeen evaluations were performed at monthly intervals of the incidence of rust and brown eye spot on coffee leaves. The size and distribution of the copper particles of each product with Mastersizer 2000® equipment and the pH of the syringes with digital pH meter were also evaluated. After statistical analysis, it was concluded that the association of copper and systemic fungicides was efficient in the control of brown eye spot. There is a difference between copperbased products in the control of rust and brown eye spot, the pH of the syrup increases with time in all the mixtures and losses of productivity in high levels of rust and brown eye spot reaches more than 50% less when compared to the control with fungicides. No symptoms of phytotoxicity were observed. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-16T15:17:53Z 2018-11-16T15:17:53Z 2018-11-16 2018-08-30 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
PAULA, P. V. A. A. de. Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro. 2018. 122 p. Tese (Doutorado em Agronomia/Fitopatologia)-Universidade Federal de Lavras, Lavras, 2018. http://repositorio.ufla.br/jspui/handle/1/31761 |
identifier_str_mv |
PAULA, P. V. A. A. de. Mistura de fungicidas sistêmicos com cúpricos e análise espaço temporal de doenças do cafeeiro. 2018. 122 p. Tese (Doutorado em Agronomia/Fitopatologia)-Universidade Federal de Lavras, Lavras, 2018. |
url |
http://repositorio.ufla.br/jspui/handle/1/31761 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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 |
Universidade Federal de Lavras Programa de Pós-Graduação em Agronomia/Fitopatologia UFLA brasil Departamento de Fitopatologia |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Agronomia/Fitopatologia UFLA brasil Departamento de Fitopatologia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
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Universidade Federal de Lavras (UFLA) |
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UFLA |
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UFLA |
reponame_str |
Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835081772892160 |