Tithonia diversifolia as a banker plant for beneficial arthropods protecting sugarcane fields from the Yellow Sugarcane Aphids in Tanzania

Mace Quentin, Goebel François-Régis. 2024. Tithonia diversifolia as a banker plant for beneficial arthropods protecting sugarcane fields from the Yellow Sugarcane Aphids in Tanzania. In : Working Group Landscape Management for Functional Biodiversity. Moonen Anna-Camilla (ed.), Begg Graham (ed.), Lupi Daniela (ed.), Loni Augusto (ed.), McHugh Niamh (ed.), Croijmans Luuk (ed.), Caselli Alice (ed.). Zürich : IOBC-WPRS, Résumé, p. 70. (IOBC-WPRS Bulletin, 170) ISBN 978-92-9067-357-6 Meeting of IOBC-WPRS Working Group "Landscape Management for Functional Biodiversity. 10, Pise, Italie, 20 Mars 2024/22 Mars 2024.

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Résumé : To find sustainable ways to protect its sugarcane areas from the key pest Sipha flava (Hemiptera: Aphididae) in north Tanzania, the local company TPC Limited funded a 6-months project in coordination with CIRAD to assess different agroecological practices, such as the use of companion plants around sugarcane fields. In this study, the influence of the flowering species Tithonia diversifolia located at the field edges as a potential banker plant for conservation biological control of the yellow sugarcane aphid was evaluated. Predatory species were identified by direct capture and/or regular observations, and the intensity of aphid damage was evaluated through number of colonies. Twenty-four aphid predator species were identified being hosted by T. diversifolia, and the vicinity of this plant reduced by 86 % the number of S. flava colonies in the sugarcane edges. These species belonged mostly to family Coccinellidae (ladybugs), Syrphidae (hoverflies), Chrysopidae (green lacewings), Dolichopodidae (long legged flies). This is the first paper evaluating T. diversifolia's potential as a banker plant in sugarcane crops for pest control.

Mots-clés libres : Conservation biocontrol, Landscape management, Functional biodiversity, SUGARCANE, Tanzania, Pests, Sipha flava, Natural ennemies

Auteurs et affiliations

• Mace Quentin, CIRAD-PERSYST-UPR AIDA (FRA) ORCID: 0009-0004-9316-9899
• Goebel François-Régis, CIRAD-PERSYST-UPR AIDA (FRA) ORCID: 0000-0002-5438-1078

Source : Cirad-Agritrop (https://agritrop.cirad.fr/609030/)

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