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Journal articles
Modelling coffee leaf rust dynamics to control its spread
Abstract : Coffee leaf rust (CLR) is one of the main diseases that affect
coffee plantations worldwide. It is caused by the fungus
Hemileia vastatrix. Damages induce severe yield losses (up
to 70%). Its control mainly relies on cultural practices and
fungicides, the latter having harmful ecological impact and
important cost. Our goal is to understand the propagation of this
fungus in order to propose a biocontrol solution, based on a
mycoparasite that inhibits H. vastatrix reproduction. We
develop and explore a spatio-temporal model that describes CLR
propagation in a coffee plantation during the rainy and dry seasons.
We show the existence of a solution and prove that there exists two
threshold parameters, the dry and rainy basic reproduction numbers,
that determine the stability of the equilibria for the dry and rainy
season subsystems. To illustrate these theoretical results,
numerical simulations are performed, using a non-standard finite
method to integrate the pest model. We also numerically investigate
the biocontrol impact. We determine its efficiency threshold in
order to ensure CLR eradication.
https://hal.inria.fr/hal-03188365
Contributor : Suzanne Touzeau <>
Submitted on : Thursday, April 1, 2021 - 11:02:50 PM
Last modification on : Wednesday, April 14, 2021 - 4:03:41 PM
Contributor : Suzanne Touzeau <>
Submitted on : Thursday, April 1, 2021 - 11:02:50 PM
Last modification on : Wednesday, April 14, 2021 - 4:03:41 PM
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