Verticilliose

Class: champignons
Common Name: Verticilliose
Scientific Name: Primarily caused by two fungi: Verticillium dahliae and Verticillium albo-atrum
Potential Host:

Tomato, potato, pepper, eggplant, cucumber, melon, pumpkin, watermelon, broccoli, cabbage, cauliflower, celery, garlic, kohlrabi, lettuce, onion, peas, radish, spinach, and turnip

Who Am I?

Verticillium wilt is a fatal disease that affects a wide range of vegetable crops. The pathogen survives in the soil as dormant microsclerotia (small survival bodies) and favors cool to moderate weather conditions. Plant debris can serve as an overwintering site for these fungi. Both Verticillium species cause nearly the same symptoms.

Initial symptoms of Verticillium wilt include the sudden yellowing of foliage that typically appears on one side of leaves. Generally, older leaves are affected first. The symptoms progress up the plant; eventually the entire plant becomes affected and dies.

Peeling away the outer layers of affected stems or branches may reveal a brown streak in the vascular tissue. Infected plants may exhibit wilting during the hottest part of the day, but can recover at night.

Control Measures

Il n’y a pas de mesures de contrôle; par conséquent, l’accent devrait être mis sur la prévention.

Rotation des cultures : Ne cultivez pas des cultures très sensibles à la maladie dans le même champ année après année.

Variétés résistantes : Il existe des variétés résistantes à la verticilliose. Par exemple, certaines variétés de tomates sont marquées de la lettre « V » pour le nom de la variété.

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.

Désinfection des sols

carbendazime et propamocarbe.

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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