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Porodaedalea pini, commonly known as the pine conk, [1] is a species of fungus in the family Hymenochaetaceae. It is a plant pathogen that causes tree disease commonly known as "red ring rot" or "white speck". This disease, extremely common in the conifers of North America, decays tree trunks, rendering them useless for lumber. [2]
Pathological pruning, in which all lower branches are pruned regardless of signs or symptoms of infection, may reduce disease instance in white pine tree stands. [ 14 ] Furthermore, genetic hybridization testing has been conducted for more than half a century in order to find resistance among strains of the species, and have since successfully ...
Fusarium circinatum is a fungal plant pathogen that causes the serious disease pitch canker on pine trees and Douglas firs (Pseudotsuga menziesii).The most common hosts of the pathogen include slash pine (Pinus elliottii), loblolly pine (Pinus taeda), Monterey pine (Pinus radiata), Mexican weeping pine (Pinus patula), and Douglas fir. [1]
"Poison sumac has leaves in a cluster of seven to 13 leaflets arranged in pairs and grows on a tree," Dr. Huang says. Poison Ivy Symptoms. ... signs of poison ivy are the linear streaks that form ...
Laminated root rot also known as yellow ring rot is caused by the fungal pathogen Phellinus weirii.Laminated root rot is one of the most damaging root disease amongst conifers in northwestern America and true firs, Douglas fir, Mountain hemlock, and Western hemlock are highly susceptible to infection with P. weirii.
This plant may look like wildflowers, but it can cause painful rash and blistering. A video of an Iowa resident with the rash explains why.
Pine-pine gall rust, also known as western gall rust, is a fungal disease of pine trees. It is caused by Endocronartium harknessii (asexual name is Peridermium harknessii ), an autoecious , endocyclic , rust fungus that grows in the vascular cambium of the host. [ 1 ]
According to Brian Kim, MD, co-director at the Center for the Study of Itch at Washington University School of Medicine in St. Louis, one of the most effective treatments for poison ivy are ...