Author: Gyenis, Laszlo; Anderson, Neil A.; Ostry, Michael E. Year: 2003 Publication: Plant Disease 87(7):809-813 Key Words: gram-positive bacteria, Mycosphaerella populorum, Populus spp Abstract:

Q: I have a sweetgum tree in my back yard that appears to be dying. The leaves have all turned color as though it was fall and they have black spots on them. What is this? A: I’ve seen similar sy

Crystal Floyd Marssonina and Septoria leaf spots are two common diseases occurring on poplars, aspens, and cottonwoods. These diseases produce similar symptoms and have similar life cycles, but ar

J.A Beare, S.A Archer, J.N.B Bell Department of Biology, Imperial College at Silwood Park, Ascot, Berkshire SL5 7PY, UK Abstract The effects of O3 on leafspot disease of poplar were assessed for