title: Field evaluation of an expertise-based formal decision system for fungicide management of grapevine downy and powdery mildews.
abstract: BACKGROUND
  In France, viticulture accounts for 20% of the phytochemicals sprayed in agriculture, and 80% of grapevine pesticides target powdery and downy mildews. European policies promote pesticide use reduction, and new methods for low-input disease management are needed for viticulture. Here, we present the assessment, in France, of Mildium, a new decision support system for the management of grapevine mildews.
  
  
  RESULTS
  A 4 year assessment trial of Mildium has been conducted in a network of 83 plots distributed across the French vineyards. In most vineyards, Mildium has proved to be successful at protecting the crop while reducing by 30-50% the number of treatments required when compared with grower practices.
  
  
  CONCLUSIONS
  The design of Mildium results from the formalisation of a common management of both powdery and downy mildews and eventually leads to a significant fungicide reduction at the plot scale. It could encourage stakeholders to design customised farm-scale and low-chemical-input decision support methods.
authors.affiliation: INRA, ISVV, UMR1065 Santé et Agroécologie du Vignoble, Villenave d'Ornon, France.|Université de Bordeaux, ISVV, UMR1065 SAVE, Villenave d'Ornon, France.
authors.forename: Laurent
authors.initials: L
authors.lastname: Delière
authors.affiliation: INRA, ISVV, UMR1065 Santé et Agroécologie du Vignoble, Villenave d'Ornon, France.|Université de Bordeaux, ISVV, UMR1065 SAVE, Villenave d'Ornon, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Cartolaro
authors.affiliation: Irstea, UR TSAN Technologies pour la Sécurité et les Performances des Agroéquipements, Antony, France.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Léger
authors.affiliation: Irstea, UMR ITAP Information-Technologies-Analyse Environnementale-Procédés Agricoles, Montpellier, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Naud
mesh_terms: D001203:Ascomycota; D003661:Decision Support Techniques; D005602:France; D005659:Fungicides, Industrial; D009868:Oomycetes; D010935:Plant Diseases / Q000382:microbiology*; D027843:Vitis / Q000382:microbiology*
chemical_list: D005659:Fungicides, Industrial
keywords: Vitis vinifera; crop protection; decision process; decision support system; disease management