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Influence of the cultivated plant diversity on the abundance of arthropod trophic groups and Helicoverpa armigera biological control in tomato cropping systems in Benin

Dassou, Anicet Gbèblonoudo; Vodouhe, Simplice Davo and Bokonon-Ganta, Aimé (2018) Influence of the cultivated plant diversity on the abundance of arthropod trophic groups and Helicoverpa armigera biological control in tomato cropping systems in Benin. In: Rahmann, Gerold; Olowe, Victor Idowu; Olabiyi, Timothy Ipoola; Azim, Khalid and Olugbenga, AdeOluwa (Eds.) Ecological and Organic Agriculture Strategies for Viable Continental and National Development in the Context of the African Union's Agenda 2063. Scientific Track Proceedings of the 4th African Organic Conference. November 5-8, 2018. Saly Portudal, Senegal, pp. 231-234.

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Summary

With the aim of optimizing pest management, a study was carried out to determine the effect of cultivated plant diversity on arthropod communities and Helicoverpa armigera regulation in tomato cropping systems. Therefore, the diversity of cultivated plants and arthropod communities were assessed within and around tomato fields from 30 farmer’s fields randomly selected in South of Benin. In each tomato field, an experimental plot (or elementary plot) (20x20m) in the center of each tomato field was delimited. Each experimental plot was subdivided into a 4 m by 4 m quadrats in which all cropped plants were identified and counted. In the center of each quadrat, one Pitfall trap with soapy water leading to 25 Pitfall traps per field was placed and uplifted after 72 hours to capture the soil and litter macrofauna. The study showed that at the field scale, the abundances of omnivore predators, generalist predators and herbivores were greater in mixed cropping systems than in monocropping systems while the abundance of Helicoverpa armigera was lower in the mixed cropping systems than in monocropping systems. Multiple intercropped plant species increased the abundance of generalist and omnivore predators. This study allowed better understanding how plant diversity associated to tomato field structures arthropod food webs to finally enhance the ecological management of H. armigera.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Tomato, Helicoverpa armigera, arthropods, predators, pest management
Subjects: Food systems
"Organics" in general > Countries and regions > Africa
"Organics" in general > Countries and regions
Research affiliation:Other countries
International Conferences > 2018: 4th African Organic Conference
ISBN:978-3-86576-190-3
Related Links:http://www.afronet.bio/
Deposited By: TOVIGNAN, TE Silvere
ID Code:33433
Deposited On:26 Sep 2019 06:47
Last Modified:26 Sep 2019 06:47
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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