A chemically defined, selective medium was developed for detecting Verticillium fungicola in mushroom casing soil, debris in mushroom production rooms and on farm premises, flies and from the mushroom sporophore. Autoclaving of the medium is not necessary. Colonies are visible within 7 days. Verticillium Colony 1. Always looks flat on the medium.
Texture is velvety.
Continues to increase in size on the medium over time. May start to grow on casing particles and then grow onto the medium. Off white to grey when small and white when larger. Circular with smooth edges and very fine hyphae. Weed Fungi Colonies 1.