Agritrop
Home

Modeling the temporal evolution of cocoa black pod rot disease caused by Phytophthora megakarya

Nembot Fomba Christian Gaele, Takam Soh Patrice, Ten Hoopen Gerben Martijn, Dumont Yves. 2018. Modeling the temporal evolution of cocoa black pod rot disease caused by Phytophthora megakarya. Mathematical Methods in the Applied Sciences, 41 (18), n.spéc. Biomathematics/Advanced Analysis in Pure & Applied Sciences : pp. 8816-8843.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
Nembot_et_al-2018-Mathematical_Methods_in_the_Applied_Sciences.pdf

Télécharger (1MB) | Request a copy
[img] Version Online first - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
Nembot_et_al-2018-Mathematical_Methods_in_the_Applied_Sciences.pdf

Télécharger (1MB) | Request a copy

Quartile : Q2, Sujet : MATHEMATICS, APPLIED

Abstract : Black pod rot, caused by Phytophthora megakarya, is the main cause of cocoa losses in Cameroon. A few studies have focused on describing black pod epidemics in cocoa yet numerous questions remain. Here, an epidemiological model describing the temporal evolution of cocoa black pod, taking into account the development stages of pods, is developed and studied. In particular, the relative importance of primary and secondary infection in disease dynamics is investigated. Our theoretical study shows the existence of a disease free equilibrium and at least one endemic equilibrium. We highlight two threshold parameters, related to direct and indirect infections that summarize all possible dynamics of the system. Then, based on the literature, we define a periodic pod recruitment function and provide several numerical simulations to study the impact of phytosanitary pod removal on disease dynamics. We show that intense and regular sanitary harvest could lead to complete disease eradication. Our results also highlight the importance of the environmental spores reservoir in disease dynamics, such that future field experiments and observations should focus on it.

Mots-clés Agrovoc : Theobroma cacao, Phytophthora, Maladie des plantes

Mots-clés géographiques Agrovoc : Cameroun

Mots-clés complémentaires : Phytophthora megakarya

Mots-clés libres : Black pod rot, Theobroma cacao, Epidemiological model, Cocoa, Phytophthora megakarya

Classification Agris : H20 - Plant diseases

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Nembot Fomba Christian Gaele, CIRAD-BIOS-UMR AMAP (FRA)
  • Takam Soh Patrice, University of Yaounde 1 (CMR)
  • Ten Hoopen Gerben Martijn, CIRAD-BIOS-UPR Bioagresseurs (TTO) ORCID: 0000-0003-2133-3130
  • Dumont Yves, CIRAD-BIOS-UMR AMAP (FRA) ORCID: 0000-0003-4817-685X - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/588646/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2021-05-01 ]