SCLEROTINIA SCLEROTIORUM ON HORSECHESTNUT TREES

Sclerotinia sclerotiorum was determined for the first time as the cause of a disease of horsechestnut (Aesculus hippocastanum) trees. Infection of current season's growth resulted in wilt and leaf necrosis; sclerotia were produced in cavities in decayed pith tissue. The occurrence of the disease in Nova Scotia in 1970 extends the h ost range of 5. sclerotiorum.