Botryosphaeria stevensii is a fungal plant pathogen that causes cankers on several tree species including apple and juniper as well as black dead arm on grape. It causes branch dieback, possibly affecting a large portion of the tree canopy, and if severe it can kill entire plants. Prevention efforts may include careful selection of plants, including resistant cultivars, planting in well-draining loose soils, exposure to light and plant spacing to reduce moisture retention.[1]
Black locusts with canker, presumably caused by Botryosphaeria stevensii. Botryosphaeria stevensii is a fungal plant pathogen that causes cankers on several tree species including apple and juniper as well as black dead arm on grape. It causes branch dieback, possibly affecting a large portion of the tree canopy, and if severe it can kill entire plants. Prevention efforts may include careful selection of plants, including resistant cultivars, planting in well-draining loose soils, exposure to light and plant spacing to reduce moisture retention.
