Poster (Scientific congresses and symposiums)
Biological control of aphids in wheat and vegetable crops : a multi-approach case study in Shandong province (China)
Chevalier Mendes Lopes, Thomas; Bosquée, Emilie; Chen, Julian et al.
2014Entomophagistes 2014
 

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Keywords :
biological control; aphids; crop associations; semiochemicals; aphidophagous beneficials
Abstract :
[en] This multi-approach study was conducted in the Shandong province (China) to assess the effectiveness of different biological control methods against aphids in wheat and vegetable crops. Three approaches were tested: (1) wheat/oilseed rape and wheat/pea associations, (2) potatoes/peas association, and (3) E-β-farnesene (aphid alarm pheromone) releasers in squashes under plastic tunnels. Aphids and aphidophagous beneficials were monitored by observations on plants. Wheat associations and E-β-farnesene reduced aphid infestations compared with control treatments, while no effect was observed in the potatoes/peas association. Moreover, aphidophagous beneficials were significantly more abundant in the three kinds of associations compared with control treatments. Few individuals were observed on squashes. Additionally, adult aphidophagous beneficials were monitored using yellow pan traps. The parasitoid species Aphidius gifuensis (Ashmead) was prevalent, while Propylea japonica (Thunberg) and Harmonia axyridis (Pallas) were the most abundant species among predators. Globally, wheat associations were more efficient to reduce aphid infestations and attract aphidophagous beneficials to promote biological control. The trapping of natural enemies allowed to assess the diversity and abundance of aphidophagous species in this region. This study shows a beneficial effect of crop associations and E-β-farnesene on the control of aphid populations and contributes to assess the potentialities of these alternative methods to the use of insecticides.
Disciplines :
Entomology & pest control
Author, co-author :
Chevalier Mendes Lopes, Thomas ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Bosquée, Emilie ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Chen, Julian;  Chinese Academy of Agricultural Sciences (CAAS) > Institute of Plant Protection
Yong, Liu;  Shandong Agricultural University > College of Plant Protection
Bragard, Claude;  Université catholique de Louvain > Unité de Phytopathologie > Earth & Life Institute
Francis, Frédéric  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Language :
English
Title :
Biological control of aphids in wheat and vegetable crops : a multi-approach case study in Shandong province (China)
Publication date :
02 April 2014
Event name :
Entomophagistes 2014
Event organizer :
Université Catholique de Louvain
Event place :
Louvain-la-Neuve, Belgium
Event date :
du 2 au 4 avril 2014
Audience :
International
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Available on ORBi :
since 19 June 2014

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