Final diagnosis


Rhizoctonia solani (Stem canker & Black scurf)

Numerous small lesions of <i><b>Alternaria</i> spp.</b>
Dwarfism and leaf rolling on an infected plant. <i><b>Rhizoctonia solani</i></b> (black scurf)
Dwarfism and leaf rolling on an infected plant. <i><b>Rhizoctonia solani</i></b> (black scurf)
Brown necrosis on stem bases of potato. <i><b>Rhizoctonia solani</i></b> (black scurf)
Brown necrosis on stolon of potato. <i><b>Rhizoctonia solani</i></b> (black scurf)
Whitish mould (sexual stage of the fungus) visible on affected stem in humid conditions. <i><b>Rhizoctonia solani</i></b> (black scurf)
Aerial tubers formed at leaf axils. <i><b>Rhizoctonia solani</i></b> (black scurf)
Sclerotia and misshapen tubers with cracks. <i><b>Rhizoctonia solani</i></b> (black scurf)
Sclérotes et déformations sur tubercule de pomme de terre. <i><b>Rhizoctonia solani</i></b> (rhizoctone brun)
Black sclerotia on tuber surface. <i><b>Rhizoctonia solani</i></b> (black scurf)
Close-up of sclerotia of <i><b>Rhizoctonia solani</i></b> with brown mycelium of the fu