Laminated root rot also known as yellowing ring rot is caused by a fungal pathogen Phellinus weirii. Laminated root rot is one of the most damaging root disease amongst conifers in northwestern America and affects mostly fir trees and cedars. Douglas fir, Mountain hemlock, Western hemlock, Grand fir, and Pacific silver fir are highly susceptible to infection with P. Weirii. A few strains of plants such as Western white pine and Lodgepole pine are tolerant to the pathogen while Ponderosa pine is resistant to it. Only hardwoods are known to be immune to the pathogen and therefore are not infected with yellow ring rot.
Read more about Laminated Root Rot: Symptoms and Signs, Discovery, Disease Cycle and Transmission, Management, Economic Importance
Famous quotes containing the words root and/or rot:
“I will go root away
The noisome weeds which without profit suck
The soil’s fertility from wholesome flowers.”
—William Shakespeare (1564–1616)
“Much attribute he hath, and much the reason
Why we ascribe it to him; yet all his virtues,
Not virtuously of his own part beheld,
Do in our eyes begin to lose their gloss,
Yea, like fair fruit in an unwholesome dish,
Are like to rot untasted.”
—William Shakespeare (1564–1616)