Is there an associational resistance of winter pea-durum wheat intercrops towards Acyrthosiphon pisum Harris?
| Autor: | Laurent Bedoussac, Alexandra Magro, Jean-Louis Hemptinne, Eric Justes, R. A. Ndzana, Etienne-Pascal Journet |
|---|---|
| Přispěvatelé: | Evolution et Diversité Biologique (EDB), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Unité d'agronomie de Chalons-Reims, Institut National de la Recherche Agronomique (INRA), Laboratoire signaux et images (SIM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
0106 biological sciences
medicine.disease_cause 010603 evolutionary biology 01 natural sciences Crop organic farming temporal-spatial scale Infestation medicine ComputingMilieux_MISCELLANEOUS 2. Zero hunger Aphid biology food and beverages Sowing Intercropping Aphididae biology.organism_classification Acyrthosiphon pisum sowing design aphids 010602 entomology Agronomy Insect Science PEST analysis [SDE.BE]Environmental Sciences/Biodiversity and Ecology Agronomy and Crop Science intercropping |
| Zdroj: | Journal of Applied Entomology Journal of Applied Entomology, Wiley, 2014, 138 (8), pp.577-585. ⟨10.1111/jen.12119⟩ Journal of Applied Entomology, 2014, 138 (8), pp.577-585. ⟨10.1111/jen.12119⟩ |
| ISSN: | 0931-2048 1439-0418 |
| DOI: | 10.1111/jen.12119⟩ |
| Popis: | Acyrthosiphon pisum Harris (Aphididae: Hemiptera), the pea aphid, is an important pest in organic farming systems. In this work, the objective was to gather empirical field data on the associational resistance of durum wheat–winter pea intercrops towards the pea aphid, compared with pure stands of winter pea. Our results showed that intercropping winter pea with durum wheat significantly decreased A. pisum abundance in all the situations. Moreover, it was systematically observed that pea grew bigger in pure than in intercropped stands but after considering pea dry mass as a covariate, it appeared that the durum wheat–winter pea intercrop was still significantly less attacked by pea aphids than the sole crop. Intercrop sowing designs had an incidence on infestation levels: substitutive diversification systems of different types are more effective in decreasing the level of aphid infestation than does the additive system. In addition, substitutive row intercrop is significantly less infested than substitutive mixture. These results suggest that a mechanism related to the resource concentration hypothesis may explain the associational resistance of the IC of durum wheat–winter pea towards A. pisum. |
| Databáze: | OpenAIRE |
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