Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects

Organic farming promotes diversification strategies to enhance ecological functions. However, early field studies suggested that not all cereal polycultures confer benefits in terms of pest control. Our research involved a trait-based field study to evaluate the advantages of different wheat polycul...

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Autores: Tous-Fandos, Alba, Caballero-López, Berta, Sans, F. Xavier
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Ajuntament de Barcelona
Repositorio:BCNROC. Repositori Obert de Coneixement de l'Ajuntament de Barcelona
OAI Identifier:oai:bcnroc.ajuntament.barcelona.cat:11703/142857
Acceso en línea:http://hdl.handle.net/2072/481471
https://doi.org/10.1002/ecs2.70076
http://hdl.handle.net/11703/142857
Access Level:acceso abierto
Palabra clave:Afídids
Control de plagues
Conreu
Agricultura biològica
Llegums
Ciència i tecnologia
articles
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spelling Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effectsTous-Fandos, AlbaCaballero-López, BertaSans, F. XavierAfídidsControl de plaguesConreuAgricultura biològicaLlegumsCiència i tecnologiaarticlesOrganic farming promotes diversification strategies to enhance ecological functions. However, early field studies suggested that not all cereal polycultures confer benefits in terms of pest control. Our research involved a trait-based field study to evaluate the advantages of different wheat polycultures on aphid control and yield. We also explored the bottom-up and top-down effects underlying aphid control. We established 10 treatments replicated in five organic fields: three wheat monocultures (Florence-Aurora [FA], Montcada [MO], and Forment [FO]), a mixture with similar-traits cultivars (FAMO), and a mixture with different-traits cultivars (FAFO), each duplicated with and without a burclover undersowing. We analyzed aphid abundance, number of aphids per tiller, parasitism rate, predatory arthropods’ abundance, and crop yield. FAFO and burclover undersowing significantly lowered aphid abundance and the number of aphids per tiller on FA. However, the treatments did not affect the abundance of predators or parasitism rates. Finally, wheat yield was similar across treatments, except in 2021 season when FA yielded significantly less. Our findings suggest that polycultures’ benefits on aphid control are cultivar specific. Mixing wheat cultivars with complementary functional traits (height and odor profile) and the association of wheat monoculture with a burclover undersowing enhances aphid control by bottom-up effects without compromising crop yield. Nevertheless, stacking the cultivar mixtures with burclover undersowing did not outperform the results of a single diversity practices, probably because of functional redundancy of resistant cultivars and burclover cover.info:eu-repo/semantics/publishedVersionConsorci del Museu de Ciències Naturals de Barcelona202620262025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/2072/481471https://doi.org/10.1002/ecs2.70076http://hdl.handle.net/11703/142857reponame:BCNROC. Repositori Obert de Coneixement de l'Ajuntament de Barcelonainstname:Ajuntament de BarcelonaInglés© 2025 The Author(s)CC-BYinfo:eu-repo/semantics/openAccessoai:bcnroc.ajuntament.barcelona.cat:11703/1428572026-05-27T12:53:21Z
dc.title.none.fl_str_mv Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
title Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
spellingShingle Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
Tous-Fandos, Alba
Afídids
Control de plagues
Conreu
Agricultura biològica
Llegums
Ciència i tecnologia
articles
title_short Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
title_full Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
title_fullStr Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
title_full_unstemmed Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
title_sort Associating cultivars or species with complementary traits is key for enhancing aphid control through bottom-up effects
dc.creator.none.fl_str_mv Tous-Fandos, Alba
Caballero-López, Berta
Sans, F. Xavier
author Tous-Fandos, Alba
author_facet Tous-Fandos, Alba
Caballero-López, Berta
Sans, F. Xavier
author_role author
author2 Caballero-López, Berta
Sans, F. Xavier
author2_role author
author
dc.contributor.none.fl_str_mv Consorci del Museu de Ciències Naturals de Barcelona
dc.subject.none.fl_str_mv Afídids
Control de plagues
Conreu
Agricultura biològica
Llegums
Ciència i tecnologia
articles
topic Afídids
Control de plagues
Conreu
Agricultura biològica
Llegums
Ciència i tecnologia
articles
description Organic farming promotes diversification strategies to enhance ecological functions. However, early field studies suggested that not all cereal polycultures confer benefits in terms of pest control. Our research involved a trait-based field study to evaluate the advantages of different wheat polycultures on aphid control and yield. We also explored the bottom-up and top-down effects underlying aphid control. We established 10 treatments replicated in five organic fields: three wheat monocultures (Florence-Aurora [FA], Montcada [MO], and Forment [FO]), a mixture with similar-traits cultivars (FAMO), and a mixture with different-traits cultivars (FAFO), each duplicated with and without a burclover undersowing. We analyzed aphid abundance, number of aphids per tiller, parasitism rate, predatory arthropods’ abundance, and crop yield. FAFO and burclover undersowing significantly lowered aphid abundance and the number of aphids per tiller on FA. However, the treatments did not affect the abundance of predators or parasitism rates. Finally, wheat yield was similar across treatments, except in 2021 season when FA yielded significantly less. Our findings suggest that polycultures’ benefits on aphid control are cultivar specific. Mixing wheat cultivars with complementary functional traits (height and odor profile) and the association of wheat monoculture with a burclover undersowing enhances aphid control by bottom-up effects without compromising crop yield. Nevertheless, stacking the cultivar mixtures with burclover undersowing did not outperform the results of a single diversity practices, probably because of functional redundancy of resistant cultivars and burclover cover.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/2072/481471
https://doi.org/10.1002/ecs2.70076
http://hdl.handle.net/11703/142857
url http://hdl.handle.net/2072/481471
https://doi.org/10.1002/ecs2.70076
http://hdl.handle.net/11703/142857
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv © 2025 The Author(s)
CC-BY
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2025 The Author(s)
CC-BY
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:BCNROC. Repositori Obert de Coneixement de l'Ajuntament de Barcelona
instname:Ajuntament de Barcelona
instname_str Ajuntament de Barcelona
reponame_str BCNROC. Repositori Obert de Coneixement de l'Ajuntament de Barcelona
collection BCNROC. Repositori Obert de Coneixement de l'Ajuntament de Barcelona
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