Mycosphaerella blight of Field peas

Symptoms of foot rot usually begin at the point of seed attachment and extend as a bluish-black lesion to above the soil line.
Blight symptoms occur on leaves as small, purple lesions with indefinite margins that turn brownish-black and develop a target-like appearance. Lesions coalesce and leaves may dry up but remain attached to the stem. The lesions on the stem are purple and may extend 10 mm (3/8 in.) above and below the point of leaf attachment. Infection of the flowers cause the blossoms to drop. Small, purple lesions develop on infected pods. The pods may shrink if the infection is severe. Infected seeds may show various degrees of shrinkage and discolouration or they may show no signs of infection.