Intercropping oilseed rape with wheat and releasing Harmonia axyridis sex pheromone in Northern China failed to attract and support natural enemies of aphids
[en] Description of the subject. Increasing plant diversity with flowering plants and releasing semiochemicals did not attract and
support natural enemies of insect pests for biological control.
Objectives. We tested the effect of intercropping oilseed rape with wheat, and releasing the sex pheromone of the ladybeetle
Harmonia axyridis, on the abundance of aphids’ natural enemies.
Method. Four treatments repeated three times were compared in an experimental field in Langfang (Hebei, China): (i) oilseed
rape–wheat intercropping + sex pheromone release, (ii) oilseed rape–wheat intercropping solely, (iii) pure-stand wheat and
(iv) pure-stand oilseed rape. Ladybeetles, hoverflies, lacewings and parasitoids were pan-trapped during nine weeks in spring
2016 in each treatment.
Results. A diversity of natural enemy species was trapped. However, intercropping and the release of the sex pheromone did
not significantly increase their abundance compared to pure-stands.
Conclusions. The results are discussed in regard to technical issues to improve the experimental protocol for future research
in China.
Disciplines :
Agriculture & agronomy
Author, co-author :
Hatt, Séverin ; Chinese Academy of Agricultural Sciences > Institute of Plant Protection > State Key Laboratory for Biology of Plant Diseases and Insect Pests
Qingxuan, Xu
Francis, Frédéric ; Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs
Chen, Julian
Language :
English
Title :
Intercropping oilseed rape with wheat and releasing Harmonia axyridis sex pheromone in Northern China failed to attract and support natural enemies of aphids
Alternative titles :
[en] Associer du colza avec du blé et diffuser la phéromone sexuelle de Harmonia axyridis en Chine du Nord n’a pas permis d’attirer les ennemis naturels des pucerons
Publication date :
2019
Journal title :
Biotechnologie, Agronomie, Société et Environnement
ISSN :
1370-6233
eISSN :
1780-4507
Publisher :
Presses Agronomiques de Gembloux, Gembloux, Belgium
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