Publicação
Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards
| Resumo: | Background and Aims: Recently, early defoliation (ED) has been used widely to regulate yield and reduce bunch compactness to improve tolerance to bunch rot. The aim of this study was to test ED, as an alternative to the conventional crop thinning (CT), to regulate yield and improve tolerance to bunch rot of the Vitis vinifera L. cv. Aragonez. Methods and Results: Early defoliation and CT were compared with an untreated Control over three consecutive seasons in a commercial vineyard in Portugal. Early defoliation had little effect on tolerance to bunch rot and led to progressive loss of yield reducing fruitset, bunch number, berry number and mass, compared to Control vines. Reduced bunch number is likely to be a function of reduced bud fertility. Crop thinning also reduced yield but, unlike ED, the yield reduction was less and remained constant over the seasons studied. Both ED and CT had little effect on berry composition. Conclusions: Among the two crop-regulating techniques, CT appears more suitable than ED to control grape yields in regions where yield limitations are imposed. The progressive yield decline caused by ED is likely to be not economically viable in the region studied. Significance of the Study: Early defoliation reduces bud fertility in unirrigated vineyards under Mediterranean conditions. Therefore, this practice should be avoided under those conditions |
|---|---|
| Autores principais: | Lopes, C.M. |
| Outros Autores: | Egipto, R.; Zarrouk, O.; Chaves, M.M. |
| Assunto: | bunch rot crop thinning fruitset Vitis vinifera L. yield components |
| Ano: | 2020 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| _version_ | 1866809357506707456 |
|---|---|
| author | Lopes, C.M. |
| author2 | Egipto, R. Zarrouk, O. Chaves, M.M. |
| author2_role | author author author |
| author_facet | Lopes, C.M. Egipto, R. Zarrouk, O. Chaves, M.M. |
| author_role | author |
| contributor_name_str_mv | Repositório Científico de Acesso Aberto da ULisboa |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Lopes, C.M.\"},{\"Person.name\":\"Egipto, R.\"},{\"Person.name\":\"Zarrouk, O.\"},{\"Person.name\":\"Chaves, M.M.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Repositório Científico de Acesso Aberto da ULisboa |
| datacite.creators.creator.creatorName.fl_str_mv | Lopes, C.M. Egipto, R. Zarrouk, O. Chaves, M.M. |
| datacite.date.Accepted.fl_str_mv | 2020-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2021-09-23T15:24:54Z |
| datacite.date.embargoed.fl_str_mv | 2021-09-23T15:24:54Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | bunch rot crop thinning fruitset Vitis vinifera L. yield components |
| datacite.titles.title.fl_str_mv | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| dc.contributor.none.fl_str_mv | Repositório Científico de Acesso Aberto da ULisboa |
| dc.creator.none.fl_str_mv | Lopes, C.M. Egipto, R. Zarrouk, O. Chaves, M.M. |
| dc.date.Accepted.fl_str_mv | 2020-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2021-09-23T15:24:54Z |
| dc.date.embargoed.fl_str_mv | 2021-09-23T15:24:54Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.5/21973 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Australian Society of Viticulture and Oenology Inc. |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | bunch rot crop thinning fruitset Vitis vinifera L. yield components |
| dc.title.fl_str_mv | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Background and Aims: Recently, early defoliation (ED) has been used widely to regulate yield and reduce bunch compactness to improve tolerance to bunch rot. The aim of this study was to test ED, as an alternative to the conventional crop thinning (CT), to regulate yield and improve tolerance to bunch rot of the Vitis vinifera L. cv. Aragonez. Methods and Results: Early defoliation and CT were compared with an untreated Control over three consecutive seasons in a commercial vineyard in Portugal. Early defoliation had little effect on tolerance to bunch rot and led to progressive loss of yield reducing fruitset, bunch number, berry number and mass, compared to Control vines. Reduced bunch number is likely to be a function of reduced bud fertility. Crop thinning also reduced yield but, unlike ED, the yield reduction was less and remained constant over the seasons studied. Both ED and CT had little effect on berry composition. Conclusions: Among the two crop-regulating techniques, CT appears more suitable than ED to control grape yields in regions where yield limitations are imposed. The progressive yield decline caused by ED is likely to be not economically viable in the region studied. Significance of the Study: Early defoliation reduces bud fertility in unirrigated vineyards under Mediterranean conditions. Therefore, this practice should be avoided under those conditions |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorio.ulisboa.pt/bitstreams/a6efac24-9128-4e95-abf9-478881b3e96d/download |
| funding.funder.alternateName_str_mv | FCT |
| funding.funder.identifier_str_mv | http://doi.org/10.13039/501100001871 |
| funding.funder.name_str_mv | Fundação para a Ciência e a Tecnologia |
| funding.name_str_mv | 6817 - DCRRNI ID |
| id | ul_fbb0f04ddd5bea1c089a705cd9bbdea3 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.5/21973 |
| 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:10400.5/21973 |
| organization_str_mv | urn:organizationAcronym:ul |
| person_str_mv | Lopes, C.M. Egipto, R. Zarrouk, O. Chaves, M.M. |
| publishDate | 2020 |
| publisher.none.fl_str_mv | Australian Society of Viticulture and Oenology Inc. |
| reponame_str | Repositório da Universidade de Lisboa |
| repository_id_str | urn:repositoryAcronym:ul |
| service_str_mv | urn:repositoryAcronym:ul |
| spelling | engAustralian Society of Viticulture and Oenology Inc.pt_PTBackground and Aims: Recently, early defoliation (ED) has been used widely to regulate yield and reduce bunch compactness to improve tolerance to bunch rot. The aim of this study was to test ED, as an alternative to the conventional crop thinning (CT), to regulate yield and improve tolerance to bunch rot of the Vitis vinifera L. cv. Aragonez. Methods and Results: Early defoliation and CT were compared with an untreated Control over three consecutive seasons in a commercial vineyard in Portugal. Early defoliation had little effect on tolerance to bunch rot and led to progressive loss of yield reducing fruitset, bunch number, berry number and mass, compared to Control vines. Reduced bunch number is likely to be a function of reduced bud fertility. Crop thinning also reduced yield but, unlike ED, the yield reduction was less and remained constant over the seasons studied. Both ED and CT had little effect on berry composition. Conclusions: Among the two crop-regulating techniques, CT appears more suitable than ED to control grape yields in regions where yield limitations are imposed. The progressive yield decline caused by ED is likely to be not economically viable in the region studied. Significance of the Study: Early defoliation reduces bud fertility in unirrigated vineyards under Mediterranean conditions. Therefore, this practice should be avoided under those conditionsapplication/pdfpt_PTCarry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyardsLopes, C.M.Egipto, R.Zarrouk, O.Chaves, M.M.HostingInstitutionOrganizationalRepositório Científico de Acesso Aberto da ULisboae-mailmailto:repositorio@reitoria.ulisboa.ptrepositorio@reitoria.ulisboa.ptDOIIsPartOfdoi: 10.1111/ajgw.124372021-09-23T15:24:54Z20202020-01-01T00:00:00ZHandlehttp://hdl.handle.net/10400.5/21973http://purl.org/coar/access_right/c_abf2open accessbunch rotcrop thinningfruitsetVitis vinifera L.yield components1129677 bytesFundação para a Ciência e a TecnologiaBioresources 4 Sustainability6817 - DCRRNI IDCrossref Funder IDhttp://doi.org/10.13039/501100001871literaturehttp://purl.org/coar/resource_type/c_6501journal article2020http://creativecommons.org/licenses/by/4.0/http://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorio.ulisboa.pt/bitstreams/a6efac24-9128-4e95-abf9-478881b3e96d/downloadAustralian Journal of Grape and Wine Research |
| spellingShingle | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards Lopes, C.M. bunch rot crop thinning fruitset Vitis vinifera L. yield components |
| status | SINGLETON |
| subject.fl_str_mv | bunch rot crop thinning fruitset Vitis vinifera L. yield components |
| title | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| title_full | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| title_fullStr | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| title_full_unstemmed | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| title_short | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| title_sort | Carry-over effects on bud fertility makes early defoliation a risky crop-regulating practice in Mediterranean vineyards |
| topic | bunch rot crop thinning fruitset Vitis vinifera L. yield components |
| topic_facet | bunch rot crop thinning fruitset Vitis vinifera L. yield components |
| url | http://hdl.handle.net/10400.5/21973 |
| visible | 1 |