Causal Agent:
Fusarium solani 
(teleomorph: Nectria haematococca)

Distribution:
Australia, India, Israel, Ivory Coast, Turkey and USA.

Symptoms:
Fusarium foot rot symptoms are similar to those of Buckeye root rot, and first appear on mature plants as interveinal chlorosis and necrosis of the leaves. In severe cases, leaves turn brown and collapse, and the entire plant may die. Reddish dark brown lesions form on the taproot and main lateral roots up to 30 cm (12 in.) below the soil-line. Internal vascular discoloration may extend 2 -10 cm (1-4 in.) beyond the lesions.

Conditions for Disease Development:
This fungus can survive in the soil for 2 - 3 years. Cooler temperatures favor disease development, even though the fungus can grow well at a soil temperature of 27°C (81°F). Infection can occur through wounds in the plant roots.

Control:
The use of fungicides, soil fumigation, soil solarization, or a 4 year rotation to a non-host crop may reduce losses from this disease.

Foliar interveinal chlorosis and        Root lesion on the tap root.

necrosis. 

Roof internal vascular discoloration..