Category: Vegetable Crops

Anthracnose disease may show up soon on coastal California lettuce. For the second spring in a row, rainy weather is creating conditions necessary for lettuce anthracnose, caused by the fungus Microdochium panattonianum, to develop on the very earliest crops. Initial symptoms are small, water-soaked spots on outer leaves. Spots enlarge, turn orange tan, and later […]

Pythium wilt disease has become the main root rot problem on coastal California lettuce. First found in the Salinas Valley in 2011 on only two ranches, this disease is now present in numerous fields throughout this coastal region. In contrast to Pythium root rots of spinach and other vegetables, this lettuce pathogen does not cause […]