Tavelure de la pomme

Class: champignons
Common Name: Tavelure de la pomme
Scientific Name: Venturia inaequalis
Potential Host:

Apples

Who Am I?

Apple scab is a fungal disease of great agricultural importance and worldwide dispersion. Apple scab remains dormant on the plant debris of previous seasons. Infestations can occur anytime between the initial phase of fruit formation to the time when fruits are picked. A apple scab outbreak is triggered with wetting events and disperses and reproduces during through splashing water. Green to black circular spots with a dusty-like texture appear on leaves and fruits. If not properly treated, crops exhibit decreased photosynthesis, fruit tissue damage, and fruit deformation.

Control Measures

Assainissement: Gardez l’environnement proche des cultures en éliminant les mauvaises herbes, les débris de plantes, les parties endommagées, la croissance indésirable des plantes et les plantes à proximité qui ne sont ni cultivées ni protégées.

Un minimum de 2 à 3 pulvérisations bien programmées (du début des bourgeons jusqu’à la stabilisation des conditions météorologiques) sont importantes pour la prévention. Des traitements supplémentaires doivent être appliqués tous les 8 à 10 jours sur les variétés que les bourgeons cassent en période de pluie.

Les produits utilisés dans une ou plusieurs régions du monde peuvent contenir les ingrédients suivants :

tebuconzole, trifloxystrobine, cyproconazole, azoxystrobine, captan, dithianon, bromuconazole, mancozèbe, et sifenazolenoco.

N’utilisez pas de produits à base du même principe actif lors de traitements consécutifs. Cela peut induire une résistance à l’ingrédient spécifique utilisé.

*Names marked in red are considered to be highly poisonous to beneficial insects.

*Names marked in green are considered to be organic and IPM (integrated pest management) compatible.

Caution and careful notice should be taken when using any plant protection products (insecticides, fungicides, and herbicides). It is the grower’s sole responsibility to keep track of the legal uses and permissions with respect to the laws in their country and destination markets. Always read the instructions written on labels, and in a case of contradiction, work in accordance to the product label. Keep in mind that information written on the label usually applies to local markets. Pest control products intended for organic farming are generally considered to be less effective in comparison to conventional products. When dealing with organic, biologic, and to some extent a small number of conventional chemical products, a complete eradication of a pest or disease will often require several iterations of a specific treatment or combination of treatments.

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