Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface

Detalhes bibliográficos
Autor(a) principal: Rocha, Ronicely Pereira da
Data de Publicação: 2007
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/2216
Resumo: Lettuce is the highest consumed vegetable in Brazil. It can however be severely affected by the fungus Sclerotinia sclerotiorum, Sclerotinia minor and Bremia lactucae; diseases considered to be ground and aerial part, respectively. The objective of this experiment was to evaluate the effect of different mulches, fungicides and one foliar fertilizer on the incidence of lettuce drop and severity of downy mildew in crisp type lettuce cultivars. Two experiments were carried out on the Fazenda Escola Capão da Onça, within the Universidade Estadual de Ponta Grossa, during the summer and winter season, with natural conditions of fungus infection. The experimental design was a completty randomized blocks with treatments arranged in split plots. This involved the combination of 3 types of mulches as black polypropylene, oats straw and bare ground. It also included two cultivars of crisp type lettuce Vera and Isabela. And four methods of control were used: 3 fungicides, metalaxyl + chlorothalonil, fenamidone and procimidone, a foliar fertilizer (Hortifós PK), and a control. For each treatment four repetitions were performed. The doses of each product applicateded were: metalaxyl + chlorothalonil 100 g a.i/100 L H2O, fenamidone 15 g a.i/100 L H2O, procimidone 75 g a.i/100 L H2O and foliar fertilizer 135 dosage of 135 g P2O5 + 100 g K2O/100 L H2O in the first application after seedling transplanting. In the subsequent applications were added 67.5 g P2O5 and 67.5 g K2O/100 L H2O and then continued until a maximum of 405 g P2O5 + 405 g K2O/100 L H2O was reached. This occurred in the fifth spraying, and this dosage remained until crop harvest. The first spray was performed at transplanting with subsequent applications occurring at intervals of 7 days. The incidence of lettuce drop was evaluated during the rosette phase and at the time of harvest, in 24 plants per parcel. The severity and the percentage of leaves with downy mildew symptoms and the plant fresh weight and biomass were evaluated in 8 plants per parcel at the time of harvest. Harvest occurred 45 and 57 days after the transplanting, for the summer and winter season experiments, respectively. For both seasons the incidence of lettuce drop was higher in the harvest phase than the phase of rosette. Covering with oat straw and black polypropylene reduced the lettuce drop in the summer season. Black polypropylene also reduced the percentage of leaves with downy mildew symptoms. The fungicide procymidone provided the best control of lettuce drop, while metalaxyl + chlorothalonil and foliar fertilizer showed better control of downy mildew. The Vera cultivar was revealed to be more susceptible to lettuce drop and downy mildew, however, it presented greater plant fresh weight and biomass than Isabela cultivar in the summer season. Keywords: ground covering, methods of control, Lactuca sativa L, Bremia lactucae and Sclerotinia sclerotiorum.
id UEPG_912afa49e7e63414bf93d912f9b99a9f
oai_identifier_str oai:tede2.uepg.br:prefix/2216
network_acronym_str UEPG
network_name_str Biblioteca Digital de Teses e Dissertações da UEPG
repository_id_str
spelling Pria, Maristella DallaCPF:70602026220http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4727339D6Jaccoud Filho, David de SouzaCPF:44444621753http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786438E1Mio, Louise Larissa May deCPF:76854175968http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784762Z1CPF:98086782620http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4774491H6Rocha, Ronicely Pereira da2017-07-25T19:29:49Z2007-04-192017-07-25T19:29:49Z2007-03-05ROCHA, Ronicely Pereira da. Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface. 2007. 98 f. Dissertação (Mestrado em Agricultura) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2007.http://tede2.uepg.br/jspui/handle/prefix/2216Lettuce is the highest consumed vegetable in Brazil. It can however be severely affected by the fungus Sclerotinia sclerotiorum, Sclerotinia minor and Bremia lactucae; diseases considered to be ground and aerial part, respectively. The objective of this experiment was to evaluate the effect of different mulches, fungicides and one foliar fertilizer on the incidence of lettuce drop and severity of downy mildew in crisp type lettuce cultivars. Two experiments were carried out on the Fazenda Escola Capão da Onça, within the Universidade Estadual de Ponta Grossa, during the summer and winter season, with natural conditions of fungus infection. The experimental design was a completty randomized blocks with treatments arranged in split plots. This involved the combination of 3 types of mulches as black polypropylene, oats straw and bare ground. It also included two cultivars of crisp type lettuce Vera and Isabela. And four methods of control were used: 3 fungicides, metalaxyl + chlorothalonil, fenamidone and procimidone, a foliar fertilizer (Hortifós PK), and a control. For each treatment four repetitions were performed. The doses of each product applicateded were: metalaxyl + chlorothalonil 100 g a.i/100 L H2O, fenamidone 15 g a.i/100 L H2O, procimidone 75 g a.i/100 L H2O and foliar fertilizer 135 dosage of 135 g P2O5 + 100 g K2O/100 L H2O in the first application after seedling transplanting. In the subsequent applications were added 67.5 g P2O5 and 67.5 g K2O/100 L H2O and then continued until a maximum of 405 g P2O5 + 405 g K2O/100 L H2O was reached. This occurred in the fifth spraying, and this dosage remained until crop harvest. The first spray was performed at transplanting with subsequent applications occurring at intervals of 7 days. The incidence of lettuce drop was evaluated during the rosette phase and at the time of harvest, in 24 plants per parcel. The severity and the percentage of leaves with downy mildew symptoms and the plant fresh weight and biomass were evaluated in 8 plants per parcel at the time of harvest. Harvest occurred 45 and 57 days after the transplanting, for the summer and winter season experiments, respectively. For both seasons the incidence of lettuce drop was higher in the harvest phase than the phase of rosette. Covering with oat straw and black polypropylene reduced the lettuce drop in the summer season. Black polypropylene also reduced the percentage of leaves with downy mildew symptoms. The fungicide procymidone provided the best control of lettuce drop, while metalaxyl + chlorothalonil and foliar fertilizer showed better control of downy mildew. The Vera cultivar was revealed to be more susceptible to lettuce drop and downy mildew, however, it presented greater plant fresh weight and biomass than Isabela cultivar in the summer season. Keywords: ground covering, methods of control, Lactuca sativa L, Bremia lactucae and Sclerotinia sclerotiorum.A alface é a hortaliça folhosa mais consumida pelos brasileiros. O seu cultivo é severamente afetado pelos fungos Sclerotinia sclerotiorum, Sclerotinia minor, e Bremia lactucae, doenças consideradas de solo e parte aérea, respectivamente. Com o objetivo de avaliar o efeito de coberturas de solo, diferentes fungicidas e um fertilizante foliar sobre a incidência da podridão de Sclerotinia e sobre a severidade do míldio em cultivares de alface (Lactuca sativa L.) tipo crespa, foram realizado dois experimentos na Fazenda Escola Capão da Onça pertencente a Universidade Estadual de Ponta Grossa no município de Ponta Grossa, PR nas estações de verão e inverno em condições naturais de infecção. O delineamento experimental utilizado foi inteiramente ao acaso, onde os tratamentos foram arranjados em parcela sub-subdivididas, provenientes da combinação de 3 sistemas de cultivo (polipropileno preto, palhada de aveia e solo nú), duas cultivares de alface tipo crespa (Vera e Isabela) e 4 metódos de controle (3 fungicidas – metalaxyl + chlorothalonil, fenamidone e procimidone; um fertilizante foliar - Hortifós PK) além da testemunha, com 4 repetições. As doses de cada produto foram: metalaxyl + chlorothalonil 100 g i.a./100 L H2O, fenamidone 15 g i.a./100 L H2O, procimidone 75 g i.a./100 L H2O e fertilizante foliar na dosagem de 135 g P205 + 135 g K2O/100 L H2O na primeira aplicação, logo após o transplantio das mudas. Nas aplicações seguintes foram adicionados 67,5 g P205 e 67,5 g K2O/100 L H2O até que se atingisse o máximo de 405 g P205 + 405 g K2O/100 L H2O, o que aconteceu na quinta pulverização, permanecendo com essa dosagem até a colheita. As aplicações tiveram início no transplantio das mudas e as subseqüentes em intervalos de 7 dias. Avaliou-se incidência de podridão de Sclerotinia na fase de roseta e no momento da colheita da cultura da alface em 24 plantas/parcela, severidade e porcentagem de folhas com sintomas de míldio, massa fresca e biomassa em 8 plantas/parcela. A colheita foi realizada 45 e 57 dias após o transplantio, para o experimento conduzido na estação de verão e inverno, respectivamente. A incidência de podridão de Sclerotinia foi maior na fase de colheita quando comparada com a fase de roseta para ambas estações. A palha de aveia e polipropileno preto reduziram a podridão de Sclerotinia na estação de verão, sendo que esta última cobertura de solo também proporcionou redução da porcentagem do número de folhas com sintomas de míldio. O fungicida procimidone proporcionou o melhor controle da podridão de Sclerotinia e os produtos metalaxyl + chlorothalonil e o fertilizante foliar foram os que melhor controlaram o míldio. A variedade Vera mostrou-se mais suscetível a podridão de Sclerotinia e ao míldio, entretanto, apresentou maior massa fresca e biomassa que a variadade Isabela na estação de verão.Made available in DSpace on 2017-07-25T19:29:49Z (GMT). No. of bitstreams: 1 RONICELY PEREIRA ROCHA.pdf: 1201740 bytes, checksum: 8384cf7116569f97d1ffa7453aede72b (MD5) Previous issue date: 2007-03-05application/pdfporUNIVERSIDADE ESTADUAL DE PONTA GROSSAPrograma de Pós-Graduação em AgronomiaUEPGBRAgriculturacobertura de solométodos de controleLactuca sativa L, Bremia lactucae e Sclerotinia sclerotiorumground covering, methods of control, Lactuca sativa L, Bremia lactucae and Sclerotinia sclerotiorumCNPQ::CIENCIAS AGRARIAS::AGRONOMIAManejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alfaceinfo: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:UEPGORIGINALRONICELY PEREIRA ROCHA.pdfapplication/pdf1201740http://tede2.uepg.br/jspui/bitstream/prefix/2216/1/RONICELY%20PEREIRA%20ROCHA.pdf8384cf7116569f97d1ffa7453aede72bMD51prefix/22162017-07-25 16:29:49.702oai:tede2.uepg.br:prefix/2216Biblioteca Digital de Teses e Dissertaçõeshttps://tede2.uepg.br/jspui/PUBhttp://tede2.uepg.br/oai/requestbicen@uepg.br||mv_fidelis@yahoo.com.bropendoar:2017-07-25T19:29:49Biblioteca Digital de Teses e Dissertações da UEPG - Universidade Estadual de Ponta Grossa (UEPG)false
dc.title.por.fl_str_mv Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
title Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
spellingShingle Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
Rocha, Ronicely Pereira da
cobertura de solo
métodos de controle
Lactuca sativa L, Bremia lactucae e Sclerotinia sclerotiorum
ground covering, methods of control, Lactuca sativa L, Bremia lactucae and Sclerotinia sclerotiorum
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
title_short Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
title_full Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
title_fullStr Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
title_full_unstemmed Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
title_sort Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface
author Rocha, Ronicely Pereira da
author_facet Rocha, Ronicely Pereira da
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 Jaccoud Filho, David de Souza
dc.contributor.referee1ID.fl_str_mv CPF:44444621753
dc.contributor.referee1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786438E1
dc.contributor.referee2.fl_str_mv Mio, Louise Larissa May de
dc.contributor.referee2ID.fl_str_mv CPF:76854175968
dc.contributor.referee2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784762Z1
dc.contributor.authorID.fl_str_mv CPF:98086782620
dc.contributor.authorLattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4774491H6
dc.contributor.author.fl_str_mv Rocha, Ronicely Pereira da
contributor_str_mv Pria, Maristella Dalla
Jaccoud Filho, David de Souza
Mio, Louise Larissa May de
dc.subject.por.fl_str_mv cobertura de solo
métodos de controle
Lactuca sativa L, Bremia lactucae e Sclerotinia sclerotiorum
topic cobertura de solo
métodos de controle
Lactuca sativa L, Bremia lactucae e Sclerotinia sclerotiorum
ground covering, methods of control, Lactuca sativa L, Bremia lactucae and Sclerotinia sclerotiorum
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
dc.subject.eng.fl_str_mv ground covering, methods of control, Lactuca sativa L, Bremia lactucae and Sclerotinia sclerotiorum
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
description Lettuce is the highest consumed vegetable in Brazil. It can however be severely affected by the fungus Sclerotinia sclerotiorum, Sclerotinia minor and Bremia lactucae; diseases considered to be ground and aerial part, respectively. The objective of this experiment was to evaluate the effect of different mulches, fungicides and one foliar fertilizer on the incidence of lettuce drop and severity of downy mildew in crisp type lettuce cultivars. Two experiments were carried out on the Fazenda Escola Capão da Onça, within the Universidade Estadual de Ponta Grossa, during the summer and winter season, with natural conditions of fungus infection. The experimental design was a completty randomized blocks with treatments arranged in split plots. This involved the combination of 3 types of mulches as black polypropylene, oats straw and bare ground. It also included two cultivars of crisp type lettuce Vera and Isabela. And four methods of control were used: 3 fungicides, metalaxyl + chlorothalonil, fenamidone and procimidone, a foliar fertilizer (Hortifós PK), and a control. For each treatment four repetitions were performed. The doses of each product applicateded were: metalaxyl + chlorothalonil 100 g a.i/100 L H2O, fenamidone 15 g a.i/100 L H2O, procimidone 75 g a.i/100 L H2O and foliar fertilizer 135 dosage of 135 g P2O5 + 100 g K2O/100 L H2O in the first application after seedling transplanting. In the subsequent applications were added 67.5 g P2O5 and 67.5 g K2O/100 L H2O and then continued until a maximum of 405 g P2O5 + 405 g K2O/100 L H2O was reached. This occurred in the fifth spraying, and this dosage remained until crop harvest. The first spray was performed at transplanting with subsequent applications occurring at intervals of 7 days. The incidence of lettuce drop was evaluated during the rosette phase and at the time of harvest, in 24 plants per parcel. The severity and the percentage of leaves with downy mildew symptoms and the plant fresh weight and biomass were evaluated in 8 plants per parcel at the time of harvest. Harvest occurred 45 and 57 days after the transplanting, for the summer and winter season experiments, respectively. For both seasons the incidence of lettuce drop was higher in the harvest phase than the phase of rosette. Covering with oat straw and black polypropylene reduced the lettuce drop in the summer season. Black polypropylene also reduced the percentage of leaves with downy mildew symptoms. The fungicide procymidone provided the best control of lettuce drop, while metalaxyl + chlorothalonil and foliar fertilizer showed better control of downy mildew. The Vera cultivar was revealed to be more susceptible to lettuce drop and downy mildew, however, it presented greater plant fresh weight and biomass than Isabela cultivar in the summer season. Keywords: ground covering, methods of control, Lactuca sativa L, Bremia lactucae and Sclerotinia sclerotiorum.
publishDate 2007
dc.date.available.fl_str_mv 2007-04-19
2017-07-25T19:29:49Z
dc.date.issued.fl_str_mv 2007-03-05
dc.date.accessioned.fl_str_mv 2017-07-25T19:29:49Z
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 ROCHA, Ronicely Pereira da. Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface. 2007. 98 f. Dissertação (Mestrado em Agricultura) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2007.
dc.identifier.uri.fl_str_mv http://tede2.uepg.br/jspui/handle/prefix/2216
identifier_str_mv ROCHA, Ronicely Pereira da. Manejo da podridão de Sclerotinia (Sclerotinia sclerotiorum) e Míldio (Bremia lactucae) na cultura de alface. 2007. 98 f. Dissertação (Mestrado em Agricultura) - UNIVERSIDADE ESTADUAL DE PONTA GROSSA, Ponta Grossa, 2007.
url http://tede2.uepg.br/jspui/handle/prefix/2216
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 ESTADUAL DE PONTA GROSSA
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Agronomia
dc.publisher.initials.fl_str_mv UEPG
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Agricultura
publisher.none.fl_str_mv UNIVERSIDADE ESTADUAL DE PONTA GROSSA
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UEPG
instname:Universidade Estadual de Ponta Grossa (UEPG)
instacron:UEPG
instname_str Universidade Estadual de Ponta Grossa (UEPG)
instacron_str UEPG
institution UEPG
reponame_str Biblioteca Digital de Teses e Dissertações da UEPG
collection Biblioteca Digital de Teses e Dissertações da UEPG
bitstream.url.fl_str_mv http://tede2.uepg.br/jspui/bitstream/prefix/2216/1/RONICELY%20PEREIRA%20ROCHA.pdf
bitstream.checksum.fl_str_mv 8384cf7116569f97d1ffa7453aede72b
bitstream.checksumAlgorithm.fl_str_mv MD5
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da UEPG - Universidade Estadual de Ponta Grossa (UEPG)
repository.mail.fl_str_mv bicen@uepg.br||mv_fidelis@yahoo.com.br
_version_ 1809460457605431296