Poa White Leaf Phytoplasma
View Larger
This is a excellent set of pictures taken by Mike Parks (Target SP, Santa Rosa) of white leaf on Poa annua greens. We suspect that this is caused by a phytoplasma (a type of very small bacteria)- but other reasons (environmental, physiological) have not been ruled out. This problem is wide spread enough to warrant additional research in California.
Turf Diseases