Diseases

Gummosis
Phytophthora

Grey mould
Botrytis sp.

Damping off
Pythium & Rhizoctonia spp

Root rots
Pathology

Black scurf
Rhizoctonia solani

Stem canker
Phomopsis helianthi

Loose Smut
Ustilago nuda f. sp. tritici

Anthracnose
Colletotrichum graminicola

Downy mildew
Pseudoperonospora cubensis

Late Blight
Phytophthora infestans

Early Blight
Alternaria solani

Powdery Midlew
Erysiphe cichoracearum, Sphaerotheca fuliginea

White rot
Phanerochaete chrysosporium

Purple blotch
Alternaria porri