Multi-scale modelling of infection pressure from Phytophthora infestans

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Abstract

Management of potato late blight could benefit from prediction of the risk posed to potato fields from external inoculum sources of Phytophthora infestans. Influx of inoculum depends on a complex interplay of population biological, atmospheric and spore survival processes, and is difficult to predict. This research aims at building tools for such prediction. BLIGHTSPACE is a spatio-temporal model (parameterized for potato late blight) that has been developed and utilized to study the progress of epidemics in individual fields and networks of fields. A quasi-Gaussian plume model was developed to provide long-range transport of spores within BLIGHTSPACE. Numerical results compared favorably with experimental data. A further submodel for the survival of spores during long-range transportation has been added. Integration of these three submodels will create an experimental arena for comparing control options for potato late blight.
Original languageEnglish
Pages (from-to)313-316
JournalEPPO Bulletin
Volume37
Issue number2
DOIs
Publication statusPublished - 2007

Keywords

  • plant protection
  • phytophthora infestans
  • organic farming
  • potatoes
  • models

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