disease_location_freshwater
water
Small black, water-soaked lesions on lower hypocotyl and epidermis with slight longitudinal cracking of subepidermal tissues; blackening and collapse of roots, hypocotyls, petioles, and cotyledons in seedlings; constrictions and irregular bands around circumference of root (girdle disease) in older plants; blackening of internal tissues in a portion or all of the root with deformity and stunting of the tops due to growth retardation; invasion by soft-rot bacteria
Aphanomyces raphani
Aphanomyces raphani