Leaves wilt and turn yellow, even when soil is moist.
Yellowing leaves may be mistaken for nutrient deficiency; can be spread by contaminated seed.
Green leaves infected with the pathogen roll and curl ("green wilt"); leaves turn yellow then necrotic; plants become stunted and die; rhizomes are discolored and water-soaked and may be rotting inside.
Use resistant varieties
Remove or destroy affected plants before disease spreads.