Older leaves have irregular yellow areas which are interveinal. The disease is associated with the presence of whiteflies. The nature of the geminivirus has not been determined, nor has the presence of other viruses been ruled out. Preliminary experiments by Dr. Brown suggest the virus is not seedborne. There are no control measures.
Infected plants die suddenly from mid-summer to fall.
Leaves usually remain attached to the plant. For more information see the Cotton Root Rot Section. See the section on Charcoal Rot. See the Southern Blight Section. Some of these causes can be classified as physiological, while others could be the result of infection by soilborne diseases.