Damage:
When you pull up an infected pea plant, it will have a skimpy root system with most small roots missing. A dark area of decay may be present on the main stem near the soil line.
Preventing Problems:
Plant peas in soil that has been thoroughly cultivated, and do not plant peas after potatoes or beans. Some varieties provide genetic resistance. Do not weed peas after they begin to show flower buds, because physical injuries to the roots can provide openings through which fusarium fungi can enter the plants.
Managing Outbreaks:
Pull up affected plants and compost them if you can do so without injuring neighboring vines. Sometimes it is better to let the withered plants stay in place until the planting is ready to take down.