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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.
Alternaria rot Alternaria alternata: American brown rot Monilinia fructicola: Anthracnose canker and bull's-eye rot Pezicula malicorticus Cryptosporiopsis curvispora [anamorph] Apple scab: Venturia inaequalis Spilocaea pomi [anamorph] Apple ring rot and canker Botryosphaeria berengeriana = Physalospora. Armillaria root rot = shoestring root rot
Root rot is a condition in which anoxic conditions in the soil or potting media around the roots of a plant cause them to rot. This occurs due to excessive standing water around the roots. [ 1 ] It is found in both indoor and outdoor plants, although it is more common in indoor plants due to overwatering, heavy potting media, or containers with ...
In systematic virus infections leaf spots caused by viruses show a loss of green colour in leaves, due to chlorosis which is a repression of chlorophyll development. [1] Leaves may yellow and have a mottled green or yellow appearance, show mosaic (e.g. chlorotic spotting) and ringspots (chlorotic or necrotic rings). [7]
Phytophthora crown and root rot (sprinkler rot) Phytophthora cactorum. Pink mold rot Trichothecium roseum = Cephalothecium roseum. Powdery mildew Podosphaera leucotricha. Pythium dieback Pythium spp. Rhizopus rot Rhizopus stolonifer. Rust, American hawthorne Gymnosporangium globosum. Rust, Kern's pear Gymnosporangium kernianum. Rust, Pacific ...
Clavibacter michiganensis, also known as Ring Rot, is an unusual genus of phytopathogenic bacteria in that it is gram-positive and does not have a type three secretion system. All Clavibacter species and subspecies have a type B2γ cell wall crosslinked at a diaminobutyrate residue. Clavibacter is an aerobic bacterium with a coryneform morphology.
“The leaves can suffer unsightly sunburn,” says Hancock. “Just like people, leaves that aren’t used to [it] can suffer when they go directly from shade into the sun.”
Violet root rot Sphaerostilbe repens. White root rot Rigidoporus microporus = Rigidoporus lignosus = Fomes lignosus. White scab Elsinoe leucospila = Sphaceloma theae. White spot Phyllosticta theifolia: Wood rot Hypoxylon nummularium Hypoxylon serpens Hypoxylon vestitum. Xylaria root rot Xylaria sp.