disease_substrate_seed
seed
Pre-emergence and post-emergence damping off and leaf, stem and pod spot. On the leaves the brown, round or irregular spots are up to 2 cm diam. with concentric zonations on the upper surface, coalescent; leaf fall can be severe. Stem and capsule lesions may be less conspicuous but those on the former can present a water-soaked appearance, spreading almost the whole length of the stem. Infected seed leads to reduced emergence.
Macrosporium sesami
Alternaria sesami