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2018

Enhancing crop diversity and ecosystem services to promote biological control of fall armyworm in smallholder cropping systems

Kenya

Department for International Development UKAID

Titre : Enhancing crop diversity and ecosystem services to promote biological control of fall armyworm in smallholder cropping systems

Pays : Kenya

Numéro du projet : GB-GOV-13-FUND—GCRF-BB_R020795_1

Organismes de mise en œuvre : Keele University

Durée : Actual Start 01 Jul 2018 // Actual End31 May 2021

Objectifs
Our overarching hypothesis is that crop losses to pests can be mitigated by using appropriate crop diversity. This diversity would be both in terms of genetic traits within the crop and in terms of the diversity of crop species within mixed cropping systems. We hypothesise that this will a) provide direct resistance to pest attack and b) enhance the ecosystem service provided by natural enemies of pests. We will test whether crop losses to the invasive fall armyworm (FAW), Spodoptera frugiperda, can be reduced by using appropriate varieties of maize, sorghum and millet and by companion planting within smallholder cropping systems. Specific objectives are : 1. Assess S. frugiperda resistance of farmer preferred maize, millet and sorghum varieties, including assessment of response to egg laying (early herbivore alert). 2. Assess potential companion crops to develop a Push-Pull system that resists S. frugiperda attack. This will include evaluating companion crops which augment egg and larval parasitoids via early herbivory alert. We will develop a resilient push-pull system which will include control of stemborers, striga weed and FAW. 3. Sample S. frugiperda in field locations to determine which natural enemies attack it in Kenya and conduct experiments to assess tritrophic interactions with crops. 4. Chemical and electrophysiological analysis of secondary metabolites from biologically active plants from objectives one and two. 5. Develop a novel S. frugiperda resilient cropping system using the most promising plants from objectives one and two. 6. Farmer evaluation of new pest management methods. To ensure acceptance, crop varieties will need to have suitable quality and agronomic characteristics and companion plants will need to have additional value to the farmers beyond FAW management, such as striga control, fodder provision and soil health improvement.

Financement : UK - Department for Business, Energy and Industrial Strategy
Project budget : £1,104,433

Présentation (UKAID)

Page publiée le 29 octobre 2022