Eco-friendly nets to improve vegetable production and quality in sub-Saharan Africa

Martin Thibaud, Simon Serge, Parrot Laurent, Assogba Komlan Françoise, Vidogbéna Faustin, Adegbidi Anselme, Baird Vance, Saidi Mwanarusi, Kasina Muo, Wasilwa Luike A., Subramanian Sevgan, Ngouajio Mathieu. 2015. Eco-friendly nets to improve vegetable production and quality in sub-Saharan Africa. In : XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): International Symposia on Innovative Plant Protection in Horticulture, Biosecurity, Quarantine Pests, and Market Access. Hale C (ed.), Hunter D (ed.), Roberts W (ed.), Ikin R (ed.), McMaugh S (ed.). ISHS. Leuven : ISHS [Belgique], 221-228. (Acta Horticulturae : ISHS, 1105) ISBN 978-94-62610-99-6 International Horticultural Congress. 29, Brisbane, Australie, 17 Août 2014/22 Août 2014.

Résumé : Continuous coverage of vegetables with nets under different climate conditions in Benin and Kenya proved effective in prot ecting vegetable nurseries and main fields against key lepidopteran and dipteran pests. However, netting did not effectively protect the vegetables against small insects such as aphids and whiteflies, although a visual barrier could delay outbreaks. Hence, opening the nets during the day could be an alternative option to conserve the natu ral enemies for small insects. Moreover, the efficacy of the visual barrier may be complemented by a repellent compound impregnated in the net. The small-holder growers adopting the nets in Benin and Kenya have reduced the number of pesticid e applications required by 70-100%. They have also increased the yield in quality and quantity of production due to microclimate modification. Cost-benefit anal yses of the technology showed that with insect proof nets profitability rates of up to three times could be achieved when compared to the farmers' practices observed in the real environment. Hence, this technology could be a promising way to develop an agro-ecological approach for sustainable management of key horticultural crop pests.

Mots-clés libres : Pests, Insect nets, Vegetables, IPM, Smallholder farmers

Classification Agris : H10 - Ravageurs des plantes

Auteurs et affiliations

• Martin Thibaud, CIRAD-PERSYST-UPR HortSys (KEN) ORCID: 0000-0002-4915-4436
• Simon Serge, CIRAD-PERSYST-UPR HortSys (SEN) ORCID: 0000-0001-8811-7809
• Parrot Laurent, CIRAD-PERSYST-UPR HortSys (FRA) ORCID: 0000-0001-5712-9305
• Assogba Komlan Françoise, KALRO (KEN)
• Vidogbéna Faustin, KALRO (KEN)
• Adegbidi Anselme, UAC (BEN)
• Baird Vance, USDA (USA)
• Saidi Mwanarusi, Egerton University (KEN)
• Kasina Muo, INRAB (BEN)
• Wasilwa Luike A., INRAB (BEN)
• Subramanian Sevgan, ICIPE (KEN)
• Ngouajio Mathieu, USDA (USA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/580024/)

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