Publicação
Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure
| Resumo: | Defoliation of grapevines have been shown to impact fruit set and fruit development, although the extent to and timing of which defoliation impacts fruit set and development is still being investigated. This is useful for the purpose of managing crop load and can be a useful tool for disease management. Currently, the understanding is that removal of leaves from the fruiting zone alters the source-sink balance, forcing the grapevine to down-prioritize flowering resulting in reduced fruit set, smaller clusters and less rot (Incidence x Severity). The purpose of this project is to investigate how pre-bloom removal of the six basal leaves on Riesling (clone 49) grapevines alters fruit set, cluster morphology and berry composition. The experiment was conducted in 2014 at Michigan State University’s Southwest Michigan research and Extension Center in Benton Harbor, MI (lat. 42005’10.55” N, long. 86021’03.68”W). Our experiments show that there is a significant impact on fruit set as a consequence of defoliation, where defoliated vines showed a lower percentage of fruit set compared to control (43% vs. 63.4%) and the lower fruit set percentage also yielded less rot within the clusters (21.3% vs. 31.5%). Differences were noted in the rachis development (rachis were heavier and thicker with longer lateral branches in the control), but no significant changes were observed in berry composition and the proportions of successfully to unsuccessfully seeded berries as a result of the treatment |
|---|---|
| Autores principais: | Poulsen, Kristian Wermuth |
| Assunto: | defoliation fruit-set cluster morphology Riesling cool climate |
| Ano: | 2015 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| _version_ | 1866811093886697472 |
|---|---|
| author | Poulsen, Kristian Wermuth |
| author_facet | Poulsen, Kristian Wermuth |
| author_role | author |
| contributor_name_str_mv | Lopes, Carlos Manuel Antunes Sabbatini, Paolo Repositório Científico de Acesso Aberto da ULisboa |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Poulsen, Kristian Wermuth\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Lopes, Carlos Manuel Antunes Sabbatini, Paolo Repositório Científico de Acesso Aberto da ULisboa |
| datacite.creators.creator.creatorName.fl_str_mv | Poulsen, Kristian Wermuth |
| datacite.date.Accepted.fl_str_mv | 2015-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2016-09-26T14:29:48Z |
| datacite.date.embargoed.fl_str_mv | 2016-09-26T14:29:48Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | defoliation fruit-set cluster morphology Riesling cool climate |
| datacite.titles.title.fl_str_mv | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| dc.contributor.none.fl_str_mv | Lopes, Carlos Manuel Antunes Sabbatini, Paolo Repositório Científico de Acesso Aberto da ULisboa |
| dc.creator.none.fl_str_mv | Poulsen, Kristian Wermuth |
| dc.date.Accepted.fl_str_mv | 2015-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2016-09-26T14:29:48Z |
| dc.date.embargoed.fl_str_mv | 2016-09-26T14:29:48Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.5/12214 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | ISA-UL |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | defoliation fruit-set cluster morphology Riesling cool climate |
| dc.title.fl_str_mv | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_bdcc |
| description | Defoliation of grapevines have been shown to impact fruit set and fruit development, although the extent to and timing of which defoliation impacts fruit set and development is still being investigated. This is useful for the purpose of managing crop load and can be a useful tool for disease management. Currently, the understanding is that removal of leaves from the fruiting zone alters the source-sink balance, forcing the grapevine to down-prioritize flowering resulting in reduced fruit set, smaller clusters and less rot (Incidence x Severity). The purpose of this project is to investigate how pre-bloom removal of the six basal leaves on Riesling (clone 49) grapevines alters fruit set, cluster morphology and berry composition. The experiment was conducted in 2014 at Michigan State University’s Southwest Michigan research and Extension Center in Benton Harbor, MI (lat. 42005’10.55” N, long. 86021’03.68”W). Our experiments show that there is a significant impact on fruit set as a consequence of defoliation, where defoliated vines showed a lower percentage of fruit set compared to control (43% vs. 63.4%) and the lower fruit set percentage also yielded less rot within the clusters (21.3% vs. 31.5%). Differences were noted in the rachis development (rachis were heavier and thicker with longer lateral branches in the control), but no significant changes were observed in berry composition and the proportions of successfully to unsuccessfully seeded berries as a result of the treatment |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| fulltext.url.fl_str_mv | https://repositorio.ulisboa.pt/bitstreams/29cc2088-c05b-407c-b57e-b9fd5b4fb781/download |
| id | ul_320c8e6e7a5e18475b24fcbc794c4962 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.5/12214 |
| instacron_str | ul |
| institution | Universidade de Lisboa |
| instname_str | Universidade de Lisboa |
| language | eng |
| network_acronym_str | ul |
| network_name_str | Repositório da Universidade de Lisboa |
| oai_identifier_str | oai:repositorio.ulisboa.pt:10400.5/12214 |
| organization_str_mv | urn:organizationAcronym:ul |
| person_str_mv | Poulsen, Kristian Wermuth |
| publishDate | 2015 |
| publisher.none.fl_str_mv | ISA-UL |
| reponame_str | Repositório da Universidade de Lisboa |
| repository_id_str | urn:repositoryAcronym:ul |
| service_str_mv | urn:repositoryAcronym:ul |
| spelling | engISA-ULpt_PTDefoliation of grapevines have been shown to impact fruit set and fruit development, although the extent to and timing of which defoliation impacts fruit set and development is still being investigated. This is useful for the purpose of managing crop load and can be a useful tool for disease management. Currently, the understanding is that removal of leaves from the fruiting zone alters the source-sink balance, forcing the grapevine to down-prioritize flowering resulting in reduced fruit set, smaller clusters and less rot (Incidence x Severity). The purpose of this project is to investigate how pre-bloom removal of the six basal leaves on Riesling (clone 49) grapevines alters fruit set, cluster morphology and berry composition. The experiment was conducted in 2014 at Michigan State University’s Southwest Michigan research and Extension Center in Benton Harbor, MI (lat. 42005’10.55” N, long. 86021’03.68”W). Our experiments show that there is a significant impact on fruit set as a consequence of defoliation, where defoliated vines showed a lower percentage of fruit set compared to control (43% vs. 63.4%) and the lower fruit set percentage also yielded less rot within the clusters (21.3% vs. 31.5%). Differences were noted in the rachis development (rachis were heavier and thicker with longer lateral branches in the control), but no significant changes were observed in berry composition and the proportions of successfully to unsuccessfully seeded berries as a result of the treatmentapplication/pdfpt_PTEffect of pre-bloom leaf defoliation on cluster morphology and disease pressurePoulsen, Kristian WermuthLopes, Carlos Manuel AntunesSabbatini, PaoloHostingInstitutionOrganizationalRepositório Científico de Acesso Aberto da ULisboae-mailmailto:repositorio@reitoria.ulisboa.ptrepositorio@reitoria.ulisboa.pt2016-09-26T14:29:48Z20152015-01-01T00:00:00ZHandlehttp://hdl.handle.net/10400.5/12214http://purl.org/coar/access_right/c_abf2open accessdefoliationfruit-setcluster morphologyRieslingcool climate1255461 bytesliteraturehttp://purl.org/coar/resource_type/c_bdccmaster thesishttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorio.ulisboa.pt/bitstreams/29cc2088-c05b-407c-b57e-b9fd5b4fb781/download |
| spellingShingle | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure Poulsen, Kristian Wermuth defoliation fruit-set cluster morphology Riesling cool climate |
| status | SINGLETON |
| subject.fl_str_mv | defoliation fruit-set cluster morphology Riesling cool climate |
| title | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| title_full | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| title_fullStr | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| title_full_unstemmed | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| title_short | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| title_sort | Effect of pre-bloom leaf defoliation on cluster morphology and disease pressure |
| topic | defoliation fruit-set cluster morphology Riesling cool climate |
| topic_facet | defoliation fruit-set cluster morphology Riesling cool climate |
| url | http://hdl.handle.net/10400.5/12214 |
| visible | 1 |