Causal organism - Mainly Microdochium nivale
The most common symptom of a serious attack of Fusarium seedling blight
is very poor plant establishment, i.e a very thin crop. This occurs because
of pre-emergence and post-emergence seedling
blights - the most important phase of the disease.
Root rotting, brown foot rot and leaf blotching (usually following some other
form of damage), glume blotch
and ear blights can all be
caused by true Fusarium species. Severe foot rot, usually affecting plants
under stress (especially moisture stress) can result in premature ripening
and 'whiteheads'. Under prolonged
snow cover M.nivale can cause 'snow mould'.