Downy Mildew

Diseases

Phytophthora root rot (caused by the fungus Phytophthora medicaginis) and colletotrichum crown rot (caused by the fungus Colletotrichum trifolii) are two major diseases reducing lucerne populations in Queensland.

Phytophthora root rot is favoured by wet soils and may occur in stands sown on poorly drained soils. These include both heavy . . . → Read More: Natural Factors Influencing Persistence and Production in Lucerne