Varieties of coffea such as Jamaican Blue Mountain show inherited resistance to this disease. Control of this disease is again by choosing the right environment. This disease is a cold temperature disease and may be avoided is the temperature never drops below 65 degrees fahrenheit. Perenox spray and other copper fungicides in four applications during the year tends to reduce the affects. The disease spreads up through the stem into the vascular strands.
Symptoms are yellowing and collapse of the leaf.
This disease affects plants in dry warm soils of Africa's equatorial areas. It attacks robusta coffea and has wiped out 100,000 acres at a time. Once this disease has been diagnosed, it is contained by fire. Pull the affected plant, the plants around the affected plant, water the ground to keep down dust, dig up about 3 feet deep of ground from all the area, take the whole pile somewhere else and burn it to fine ash, throw some gas on the dirty ash and burn it some more. It is accompanied by fungus growth and internal discoloration of the roots.