Final diagnosis


Phytophthora infestans (Late blight, downy mildew)

Mildiou5
Several leaflets are now affected; oily and brown areas are clearly visible. <i> <b> Phytophthora infestans </b> </i> (late blight)
The spots, with a rather livid margin, appear poorly defined on the upper surface of the leaf blade; the damaged tissues take on a dark green tint and quickly necrosis (browning of a few veins). <i> <b> Phytophthora infestans </b> </i> (late blight)
Large stain, also considered as a more or less oily beach. <b> <i> Phytophthora infestans </i> </b>
This leaflet has several fairly characteristic spots of late blight on tomato which are at different stages of development. Note that they first take on a pale green hue and then gradually necrosis. <i> Phytophthora infestans </i> (Mildew)
Several large spots cover a significant proportion of the leaf blade of this leaflet. They are necrotic in their center, light green on the periphery. <i> Phytophthora infestans </i> (late blight)
Mildiou6
On the underside of the leaf blade, the spots of late blight tend to be dark green to brown in color, and may be covered with a whitish down. <i> Phytophthora infestans </i> (Mildew)
A discreet white felting covers more or less the periphery of this large livid spot. <i> Phytophthora infestans </i> (late blight)
Mildiou10
This tomato plant is almost entirely mildew. Many leaves are brown and necrotic. Sections of the stem show a brown-black coloration. <i> <b> Phytophthora infestans </b> </i> (late blight)
Mildiou7
Mildiou8
This portion of the stem is also altered. Brownish to black lesions on the girdle for several centimeters. <i> <b> Phytophthora infestans </b> </i> (late blight)
Mildiou9
Mildiou1
This task is more advanced. It is brown, well mottled and irregularly bumpy on the surface. <i> <b> Phytophthora infestans </b> </i> (late blight)
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Mildiou2
Portion of brown fruit, irregularly mottled and bumpy, with ill-defined outline. <b> <i> Phytophthora infestans </i> </b> (aerial downy mildew)
<i><b>Phytophthora infestans</b></i> a rapidement fructifié sur ce jeune fruit. L'humidité importante de l'abri l'a permis. (mildiou, late blight)
Young brown "mildew" fruit partially covered with white felting. <i> <b> Phytophthora infestans </b> </i> (late blight)
This ripening fruit also has brown, mottled lesions. <i> <b> Phytophthora infestans </b> </i> (late blight)
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Several young sporangiophores with swellings are developing. <b> <i> Phytophthora infestans </i> </b> (downy mildew)
Mildiou-Tomate-WATT1
Several <i> <b> Phytophthora infestans </b> </i> (late blight) oospores are visible in the leaf blade of a diseased leaflet.
Appearance of a fertilized oogonium of <i> <b> Phytophthora infestans </b> </i> (downy mildew).