DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA

Detalhes bibliográficos
Autor(a) principal: Harms, Mônica Gabrielle
Data de Publicação: 2013
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UEPG
Texto Completo: http://tede2.uepg.br/jspui/handle/prefix/2235
Resumo: The ideal plants density consists in an extremely important condition in the determining of yield and in the commercial production of onion bulbs. The producers have sought new spatial distributions of plants, aiming harvest bulbs in accord with the size required by the consumer. The plants population have also influence on the development of diseases, because it is associated with the infective units spread of the pathogen and microclimate in culture. The experiment was conducted in the Capão da Onça School Farm aiming to evaluate the influence of plants density and the fungicide use in the occurrence of foliar diseases and the productive characteristics of Bola Precoce cultivar and Bella Dura hybrid. The experimental design was complete randomized blocks, with four replications for the Bola Precoce cultivar and three replications for the Bella Dura hybrid. The treatments were arranged in a split plot design, where the plots were either the presence or the absence of fungicide (metiram + piraclostrobina - 2,5 kg p.c. ha-1) and plant densities (12, 14, 16, 18, 20 and 22 plants m-1) were the split plots. Parameters evaluated were: severity of downy mildew (Peronospora destructor) and purple blotch (Alternaria porri), number of harvest bulbs, bulb mass, bulb diameter, bulb classification and yield. With the data of severity, the area under disease progress curve (AUDPC) was calculated. For Bola Precoce cultivar, no differences were observed between the densities for the parameters AUDPC (downy mildew and purple blotch), purple blotch severity, bulb mass, bulb diameter and bulbs class 0, 2, 3 and 3C. There was difference between densities for downy mildew severity in the evaluation made at 111 days after transplantation (DAT), and the maximum value (34,65%) was found in 15,3 plants m-1 density, in presence of fungicide. The fungicide was effective on downy mildew control in the evaluation made at 97 DAT and on the purple blotch control in the evaluation made at 97 and 104 DAT. The maximum yield was obtained in 22 plants m-1 density, reaching 18,21 and 17,70 t ha-1 in presence and absence of fungicide, respectively. For Bella Dura hybrid, no differences were observed between densities for AUDPC (downy mildew and purple blotch), bulbs class 0, downy mildew severity at 90, 97 and 104 DAT, and purple blotch severity at 90, 97 and 111 DAT. The fungicide was effective in controlling downy mildew in the evaluations made at 97 and 104 DAT. In absence of fungicide, the yield increased with the plant density increasing. In presence of fungicide, the maximum yield (22,09 t ha-1) was obtained in 17,45 plants m-1 density. There was a reduction of the mass and diameter of bulb with the plant density increment, when no fungicide was applied. In presence of fungicide, the percentage of bulbs class 3C decreased with the plant density increase.
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spelling Pria, Maristella DallaCPF:70602026220http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4727339D6Rezende, Braulio Luciano AlvesCPF:02927201650http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4770937D8Jaccoud Filho, David de SouzaCPF:44444621753http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786438E1CPF:06072200907http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4273522U6Harms, Mônica Gabrielle2017-07-25T19:29:57Z2013-04-232017-07-25T19:29:57Z2013-02-01HARMS, Mônica Gabrielle. DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA. 2013. 88 f. Dissertação (Mestrado em Agricultura) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2013.http://tede2.uepg.br/jspui/handle/prefix/2235The ideal plants density consists in an extremely important condition in the determining of yield and in the commercial production of onion bulbs. The producers have sought new spatial distributions of plants, aiming harvest bulbs in accord with the size required by the consumer. The plants population have also influence on the development of diseases, because it is associated with the infective units spread of the pathogen and microclimate in culture. The experiment was conducted in the Capão da Onça School Farm aiming to evaluate the influence of plants density and the fungicide use in the occurrence of foliar diseases and the productive characteristics of Bola Precoce cultivar and Bella Dura hybrid. The experimental design was complete randomized blocks, with four replications for the Bola Precoce cultivar and three replications for the Bella Dura hybrid. The treatments were arranged in a split plot design, where the plots were either the presence or the absence of fungicide (metiram + piraclostrobina - 2,5 kg p.c. ha-1) and plant densities (12, 14, 16, 18, 20 and 22 plants m-1) were the split plots. Parameters evaluated were: severity of downy mildew (Peronospora destructor) and purple blotch (Alternaria porri), number of harvest bulbs, bulb mass, bulb diameter, bulb classification and yield. With the data of severity, the area under disease progress curve (AUDPC) was calculated. For Bola Precoce cultivar, no differences were observed between the densities for the parameters AUDPC (downy mildew and purple blotch), purple blotch severity, bulb mass, bulb diameter and bulbs class 0, 2, 3 and 3C. There was difference between densities for downy mildew severity in the evaluation made at 111 days after transplantation (DAT), and the maximum value (34,65%) was found in 15,3 plants m-1 density, in presence of fungicide. The fungicide was effective on downy mildew control in the evaluation made at 97 DAT and on the purple blotch control in the evaluation made at 97 and 104 DAT. The maximum yield was obtained in 22 plants m-1 density, reaching 18,21 and 17,70 t ha-1 in presence and absence of fungicide, respectively. For Bella Dura hybrid, no differences were observed between densities for AUDPC (downy mildew and purple blotch), bulbs class 0, downy mildew severity at 90, 97 and 104 DAT, and purple blotch severity at 90, 97 and 111 DAT. The fungicide was effective in controlling downy mildew in the evaluations made at 97 and 104 DAT. In absence of fungicide, the yield increased with the plant density increasing. In presence of fungicide, the maximum yield (22,09 t ha-1) was obtained in 17,45 plants m-1 density. There was a reduction of the mass and diameter of bulb with the plant density increment, when no fungicide was applied. In presence of fungicide, the percentage of bulbs class 3C decreased with the plant density increase.A densidade ideal de plantas é extremamente importante na determinação da produtividade e da produção comercial de bulbos de cebola. Produtores têm buscado novas distribuições espaciais de plantas, objetivando colheita de bulbos de acordo com o tamanho exigido pelo consumidor. A densidade de plantas também influencia o desenvolvimento de doenças, pois tem relação com a disseminação das unidades infectivas do patógeno e o microclima na cultura. O experimento foi conduzido na Fazenda Escola Capão da Onça com o objetivo de avaliar a influência da densidade de plantas e o uso de fungicida na ocorrência de doenças foliares e nas características produtivas do cultivar Bola Precoce e do híbrido Bella Dura. O delineamento experimental utilizado foi o de blocos ao acaso com quatro repetições para o cultivar Bola Precoce e três repetições para o híbrido Bella Dura. Os tratamentos foram arranjados em parcelas subdivididas, sendo que as parcelas constituíram a presença ou ausência de fungicida (metiram + piraclostrobina - 2,5 kg p.c. ha-1) e as densidades de plantas (12, 14, 16, 18, 20 e 22 plantas m-1) constituíram as subparcelas. As características avaliadas foram: severidade de míldio (Peronospora destructor) e de mancha púrpura (Alternaria porri), número de bulbos, massa média do bulbo, diâmetro médio do bulbo, classificação dos bulbos e produtividade total. Com os dados de severidade calculou-se a área abaixo da curva do progresso das doenças (AACPD). Para o cultivar Bola Precoce, não foram observadas diferenças entre as densidades para os parâmetros AACPD (míldio e mancha púrpura), severidade de mancha púrpura, massa média do bulbo, diâmetro do bulbo e bulbos classe 0, 2, 3 e 3C. Houve diferença entre densidades para a severidade do míldio na avaliação realizada aos 111 dias após o transplante (DAT), sendo o maior valor (34,65%) encontrado na densidade de 15,3 plantas m-1 na presença de fungicida. O fungicida foi eficiente no controle do míldio na avaliação realizada aos 97 DAT e no controle da mancha púrpura nas avaliações realizadas aos 97 e 104 DAT. A produtividade total máxima foi obtida na densidade de 22 plantas m-1, alcançando 18,21 e 17,70 t ha-1 na presença e ausência de fungicida, respectivamente. Para o híbrido Bella Dura, não foram observadas diferenças entre as densidades para os parâmetros AACPD (míldio e mancha púrpura), bulbos classe 0, severidade de míldio aos 90, 97 e 104 DAT e severidade de mancha púrpura aos 90, 97 e 111 DAT. O fungicida foi eficiente no controle do míldio nas avaliações realizadas aos 97 e 104 DAT. Na ausência do fungicida a produtividade total aumentou com o incremento da densidade de plantas. Na presença do fungicida, maior produtividade (22,09 t ha-1) foi obtida na densidade de 17,45 plantas m-1. Houve redução da massa média dos bulbos e do diâmetro do bulbo com o incremento da densidade de plantas quando o fungicida não foi aplicado. Na presença do fungicida, a porcentagem de bulbos pertencentes à classe 3C diminuiu com o aumento da densidade de plantas.Made available in DSpace on 2017-07-25T19:29:57Z (GMT). No. of bitstreams: 1 Monica G Harms.pdf: 1165275 bytes, checksum: cc8059801e06e439fa7ed83ee82ad8db (MD5) Previous issue date: 2013-02-01Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUNIVERSIDADE ESTADUAL DE PONTA GROSSAPrograma de Pós-Graduação em AgronomiaUEPGBRAgriculturaAllium cepamíldiomancha púrpurapopulação de plantasAllium cepa, downy mildew, purple blotch, plants populationCNPQ::CIENCIAS AGRARIAS::AGRONOMIADENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLAinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPGinstname:Universidade Estadual de Ponta Grossa (UEPG)instacron:UEPGORIGINALMonica G Harms.pdfapplication/pdf1165275http://tede2.uepg.br/jspui/bitstream/prefix/2235/1/Monica%20G%20Harms.pdfcc8059801e06e439fa7ed83ee82ad8dbMD51prefix/22352017-07-25 16:29:57.534oai:tede2.uepg.br:prefix/2235Biblioteca Digital de Teses e Dissertaçõeshttps://tede2.uepg.br/jspui/PUBhttp://tede2.uepg.br/oai/requestbicen@uepg.br||mv_fidelis@yahoo.com.bropendoar:2017-07-25T19:29:57Biblioteca Digital de Teses e Dissertações da UEPG - Universidade Estadual de Ponta Grossa (UEPG)false
dc.title.por.fl_str_mv DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
title DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
spellingShingle DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
Harms, Mônica Gabrielle
Allium cepa
míldio
mancha púrpura
população de plantas
Allium cepa, downy mildew, purple blotch, plants population
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
title_short DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
title_full DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
title_fullStr DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
title_full_unstemmed DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
title_sort DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA
author Harms, Mônica Gabrielle
author_facet Harms, Mônica Gabrielle
author_role author
dc.contributor.advisor1.fl_str_mv Pria, Maristella Dalla
dc.contributor.advisor1ID.fl_str_mv CPF:70602026220
dc.contributor.advisor1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4727339D6
dc.contributor.referee1.fl_str_mv Rezende, Braulio Luciano Alves
dc.contributor.referee1ID.fl_str_mv CPF:02927201650
dc.contributor.referee1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4770937D8
dc.contributor.referee2.fl_str_mv Jaccoud Filho, David de Souza
dc.contributor.referee2ID.fl_str_mv CPF:44444621753
dc.contributor.referee2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786438E1
dc.contributor.authorID.fl_str_mv CPF:06072200907
dc.contributor.authorLattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4273522U6
dc.contributor.author.fl_str_mv Harms, Mônica Gabrielle
contributor_str_mv Pria, Maristella Dalla
Rezende, Braulio Luciano Alves
Jaccoud Filho, David de Souza
dc.subject.por.fl_str_mv Allium cepa
míldio
mancha púrpura
população de plantas
topic Allium cepa
míldio
mancha púrpura
população de plantas
Allium cepa, downy mildew, purple blotch, plants population
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
dc.subject.eng.fl_str_mv Allium cepa, downy mildew, purple blotch, plants population
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
description The ideal plants density consists in an extremely important condition in the determining of yield and in the commercial production of onion bulbs. The producers have sought new spatial distributions of plants, aiming harvest bulbs in accord with the size required by the consumer. The plants population have also influence on the development of diseases, because it is associated with the infective units spread of the pathogen and microclimate in culture. The experiment was conducted in the Capão da Onça School Farm aiming to evaluate the influence of plants density and the fungicide use in the occurrence of foliar diseases and the productive characteristics of Bola Precoce cultivar and Bella Dura hybrid. The experimental design was complete randomized blocks, with four replications for the Bola Precoce cultivar and three replications for the Bella Dura hybrid. The treatments were arranged in a split plot design, where the plots were either the presence or the absence of fungicide (metiram + piraclostrobina - 2,5 kg p.c. ha-1) and plant densities (12, 14, 16, 18, 20 and 22 plants m-1) were the split plots. Parameters evaluated were: severity of downy mildew (Peronospora destructor) and purple blotch (Alternaria porri), number of harvest bulbs, bulb mass, bulb diameter, bulb classification and yield. With the data of severity, the area under disease progress curve (AUDPC) was calculated. For Bola Precoce cultivar, no differences were observed between the densities for the parameters AUDPC (downy mildew and purple blotch), purple blotch severity, bulb mass, bulb diameter and bulbs class 0, 2, 3 and 3C. There was difference between densities for downy mildew severity in the evaluation made at 111 days after transplantation (DAT), and the maximum value (34,65%) was found in 15,3 plants m-1 density, in presence of fungicide. The fungicide was effective on downy mildew control in the evaluation made at 97 DAT and on the purple blotch control in the evaluation made at 97 and 104 DAT. The maximum yield was obtained in 22 plants m-1 density, reaching 18,21 and 17,70 t ha-1 in presence and absence of fungicide, respectively. For Bella Dura hybrid, no differences were observed between densities for AUDPC (downy mildew and purple blotch), bulbs class 0, downy mildew severity at 90, 97 and 104 DAT, and purple blotch severity at 90, 97 and 111 DAT. The fungicide was effective in controlling downy mildew in the evaluations made at 97 and 104 DAT. In absence of fungicide, the yield increased with the plant density increasing. In presence of fungicide, the maximum yield (22,09 t ha-1) was obtained in 17,45 plants m-1 density. There was a reduction of the mass and diameter of bulb with the plant density increment, when no fungicide was applied. In presence of fungicide, the percentage of bulbs class 3C decreased with the plant density increase.
publishDate 2013
dc.date.available.fl_str_mv 2013-04-23
2017-07-25T19:29:57Z
dc.date.issued.fl_str_mv 2013-02-01
dc.date.accessioned.fl_str_mv 2017-07-25T19:29:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.citation.fl_str_mv HARMS, Mônica Gabrielle. DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA. 2013. 88 f. Dissertação (Mestrado em Agricultura) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2013.
dc.identifier.uri.fl_str_mv http://tede2.uepg.br/jspui/handle/prefix/2235
identifier_str_mv HARMS, Mônica Gabrielle. DENSIDADE DE PLANTAS E USO DE FUNGICIDA NA OCORRÊNCIA DE DOENÇAS FOLIARES E NA PRODUTIVIDADE DE BULBOS DE CEBOLA. 2013. 88 f. Dissertação (Mestrado em Agricultura) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2013.
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dc.publisher.initials.fl_str_mv UEPG
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Agricultura
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