Tree Diseases: White Pine Blister Rust
Introduction White pine blister rust is a fungal disease of white pine. It is caused by the fungus, Cronartium ribicola. The disease pathogen is native to Asia. It was inadvertantly…
Introduction White pine blister rust is a fungal disease of white pine. It is caused by the fungus, Cronartium ribicola. The disease pathogen is native to Asia. It was inadvertantly…
Introduction Pine-oak gall rust, also referred to as eastern gall rust, is a fungal disease that affects various pine and oak trees. The disease is native to North America. It…
Introduction Pine-pine gall rust, also referred to as western gall rust, and Woodgate gall rust, is a fungal disease that infects two and three needle pine trees. It is caused…
Introduction Lophodermium needle cast is a fungal disease that affects two and three needled pines, as well as some five needled pines. The disease is caused by the fungus, Lophodermium…
Introduction Elytroderma needle cast, also known as Elytroderma disease, is a fungal disease of pine trees. It is especially common on ponderosa pine. Elytroderma needle cast is caused by the…
Introduction Dothistroma needle blight, often referred to as red band disease in the western United States, is a devastating foliar disease of pines. The causal agent of the disease is…
Introduction Annosum root rot, also referred to as annosus root rot, is a fungal disease of pine, spruce, and fir trees. The causal agent of the disease is the fungus,…
Introduction Rhizosphaera needle cast is a fungal disease that affects many spruce trees, particularly Colorado blue spruce, and Engelmann spruce. The causal agent of the disease is the fungus, Rhizosphaera…
Introduction Pine wilt disease is an affliction of pine caused by the pine wood nematode, Bursaphelenchus xylophilus. The pine wood nematode is a microscopic parasite. It is transmitted to susceptible…
Introduction Pine needle rust is a fungal disease that affects many species of pine. The disease is caused by over twenty species of Coleosporium fungi. Coleosporium asterum is the most…