Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley

BACKGROUND: Almond blossom blight, caused by Monilinia spp., is a notable fungal disease associated with intensified cropmanagement practices. In this study, we aimed to investigate the epidemiology of Monilinia spp. on almonds in two orchardsin the Ebro Valley, with a focus on (i) primary inoculum s...

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Autores: Casals, Carla, Zúñiga, Erick, Miarnau, Xavier, Torguet Pomar, Laura, Teixidó, Neus, Segarra, Joan, Torres, Rosario
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
Repositorio:IRTA Pubpro. Open Digital Archive
OAI Identifier:oai:dnet:irtapubpro__::0e408aa3daf1838bdef6a0d4138d08fd
Acesso em linha:http://hdl.handle.net/20.500.12327/5053
https://doi.org/10.1002/ps.70184
Access Level:acceso abierto
Palavra-chave:632
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spelling Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro ValleyCasals, CarlaZúñiga, ErickMiarnau, XavierTorguet Pomar, LauraTeixidó, NeusSegarra, JoanTorres, Rosario632BACKGROUND: Almond blossom blight, caused by Monilinia spp., is a notable fungal disease associated with intensified cropmanagement practices. In this study, we aimed to investigate the epidemiology of Monilinia spp. on almonds in two orchardsin the Ebro Valley, with a focus on (i) primary inoculum sources through sampling of affected mummified fruiting structuresfrom trees and the ground before blooming; (ii) secondary inoculum sources postblooming; and (iii) disease dynamics through-out the season in relation to meteorological data.RESULTS: Monilinia laxa was the primary species affecting almonds in the Ebro Valley. Furthermore, early-stage mummifiedfruiting structures frequently adhered to branches (3.8 log conidia/mummified fruiting structure), whereas late-stage mummi-fied fruiting structures were predominantly found on the ground. Additionally, cankers present before blooming (6.0 × 102 and1.4 × 103 conidia/canker) served as primary inoculum sources. Inoculum incidence and concentration were significantly higherin late-stage fruits (50–100%, 8.5 × 103–2.5 × 105 conidia/plant organ) than those in flowers (20–30%, 2.0–4.0 × 103 conidia/plant organ) or those in postblooming cankers (1.0 × 102–1.8 × 10 3 conidia/canker). Infection dynamics of blossom blight inboth orchards peaked during the last third of April under favorable meteorological conditions, specifically within the 10 dayspreceding the assessments. Significant correlations were found between infections progression and meteorological parame-ters, including temperature, relative humidity, rainfall and leaf wetness.CONCLUSION: These findings provide critical insights into sustainable disease management practices and the optimal timing ofprotective measures against blossom blight.© 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.This work was funded by FEADER and Generalitat de Catalunya through Operational Group ‘Operation 16.01.01 of Cooperation for Innovation of the Rural Development Program of Catalonia 2014-2020, ALMON and MONCONTROL projects’ and by funding received from the CERCA Programme and SGR-01477 (Generalitat de Catalunya). We would like to thank Crisol De Frutos Secos SAT, Borges Agricultural & Industrial Nuts SA, Union Corporacio Alimentaria, SCCL, Ocean Almond S.L., and Fruits Secs Les Garrigues SCCL for their technical support.info:eu-repo/semantics/publishedVersionWileyProducció VegetalPostcollita202620262025info:eu-repo/semantics/article13application/pdfhttp://hdl.handle.net/20.500.12327/5053https://doi.org/10.1002/ps.70184reponame:IRTA Pubpro. Open Digital Archiveinstname:Institut de Recerca i Tecnologia Agroalimentàries (IRTA)InglésPest Management ScienceFEADER/ / /EU/ /Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:dnet:irtapubpro__::0e408aa3daf1838bdef6a0d4138d08fd2026-06-16T08:51:17Z
dc.title.none.fl_str_mv Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
title Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
spellingShingle Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
Casals, Carla
632
title_short Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
title_full Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
title_fullStr Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
title_full_unstemmed Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
title_sort Epidemiology of Monilinia laxa, the causal agent of blossom blight in almond orchards within the Ebro Valley
dc.creator.none.fl_str_mv Casals, Carla
Zúñiga, Erick
Miarnau, Xavier
Torguet Pomar, Laura
Teixidó, Neus
Segarra, Joan
Torres, Rosario
author Casals, Carla
author_facet Casals, Carla
Zúñiga, Erick
Miarnau, Xavier
Torguet Pomar, Laura
Teixidó, Neus
Segarra, Joan
Torres, Rosario
author_role author
author2 Zúñiga, Erick
Miarnau, Xavier
Torguet Pomar, Laura
Teixidó, Neus
Segarra, Joan
Torres, Rosario
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Producció Vegetal
Postcollita
dc.subject.none.fl_str_mv 632
topic 632
description BACKGROUND: Almond blossom blight, caused by Monilinia spp., is a notable fungal disease associated with intensified cropmanagement practices. In this study, we aimed to investigate the epidemiology of Monilinia spp. on almonds in two orchardsin the Ebro Valley, with a focus on (i) primary inoculum sources through sampling of affected mummified fruiting structuresfrom trees and the ground before blooming; (ii) secondary inoculum sources postblooming; and (iii) disease dynamics through-out the season in relation to meteorological data.RESULTS: Monilinia laxa was the primary species affecting almonds in the Ebro Valley. Furthermore, early-stage mummifiedfruiting structures frequently adhered to branches (3.8 log conidia/mummified fruiting structure), whereas late-stage mummi-fied fruiting structures were predominantly found on the ground. Additionally, cankers present before blooming (6.0 × 102 and1.4 × 103 conidia/canker) served as primary inoculum sources. Inoculum incidence and concentration were significantly higherin late-stage fruits (50–100%, 8.5 × 103–2.5 × 105 conidia/plant organ) than those in flowers (20–30%, 2.0–4.0 × 103 conidia/plant organ) or those in postblooming cankers (1.0 × 102–1.8 × 10 3 conidia/canker). Infection dynamics of blossom blight inboth orchards peaked during the last third of April under favorable meteorological conditions, specifically within the 10 dayspreceding the assessments. Significant correlations were found between infections progression and meteorological parame-ters, including temperature, relative humidity, rainfall and leaf wetness.CONCLUSION: These findings provide critical insights into sustainable disease management practices and the optimal timing ofprotective measures against blossom blight.© 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12327/5053
https://doi.org/10.1002/ps.70184
url http://hdl.handle.net/20.500.12327/5053
https://doi.org/10.1002/ps.70184
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Pest Management Science
FEADER/ / /EU/ /
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 13
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:IRTA Pubpro. Open Digital Archive
instname:Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
instname_str Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
reponame_str IRTA Pubpro. Open Digital Archive
collection IRTA Pubpro. Open Digital Archive
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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