Anthracnose: prevention is the name of the game

During the summer of 2001, Poa annua greens across the country were hard-hit by anthracnose, a disease caused by the fungus Colletotrichum graminicola. In many areas of the country, anthracnose is now the most difficult to manage disease on Poa greens. Anthracnose is sometimes regarded as a secondary disease that is merely a symptom of more serious, underlying stress. However, this is more of a theoretical, rather than a practical viewpoint, since Poa greens during the summer are almost always…