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www.alamy.com/stock-photo/dutch-elm-disease-tree.html

bark on an elm tree Latin ulmus or frondibus ulmi showing the start of Dutch elm disease also called grafiosi del olmo damaged by a beetle and fungus The trunk of a large diseased elm is put on a trailer in a complex tree removal operation in a suburban street.

tree-pictures.com/elmtreesbark.htm

Elm Tree Bark, Photo of American Elm Trunk, Close up Identification Photo of Elm Wood, Elm Trees Bark Dutch Elm Disease is a fungus which is spread by the elm bark beetle ElmTree, More pictures, images & photos of Elm trees

www.elitetreecare.com/2016/07/identifying-tree-diseases

Bark and Trunk Diseases. Beech Bark Disease affects beech trees and is caused by the combination of a beech scale insect’s feeding habits and an opportunistic fungal pathogen. An early sign of beech bark disease is a visible infection on the tree’s bark that looks like a reddish-brown, oozing, bleeding wound. (Yuck!)

www.gotreequotes.com/common-tree-diseases-and-their-treatments

As evident by the name, Ash Dieback is typically a disease that is common with Ash trees. It is caused by a fungal infection that goes by the name of Chalara Fraxinea, or C. Fraxinea for short. This disease primarily causes the tree to shed its leaves, with visible lesions in the stem that look a burn, and crown dieback.

www.scotsman.com/news/britains-sycamore-trees-under-threat-bark-disease-2513189

News Britain's sycamore trees under threat from bark disease FIRST, the vast majority of the UK’s 20 million elm trees were wiped out by the catastrophic and preventable introduction of Dutch ...

www.mortonarb.org/trees-plants/tree-and-plant-advice/help-diseases/spruce-diseases

CYTOSPORA CANKER. Cytospora canker, caused by the fungus Cytospora kunzei (also known as Valsa kunzei var. piceae), is the most prevalent and destructive fungal disease of Norway and Colorado blue spruce.Occasionally, Cytospora canker is found on Douglas-fir, hemlock, and larch. Susceptibility varies widely among species, but generally trees under stress or growing outside their natural range ...

plantdiseasehandbook.tamu.edu/landscaping/trees/oak

The fungus invades the tree through injured surfaces on its limbs and trunk. The disease is first evident as a dieback of one or more branches. The foliage of the diseased limbs turns yellow and dries. This dieback continues from branch to branch until the tree dies. The fungus infects the inner bark causing the outer bark to slough off.

www.gardenguides.com/how_10033930_diagnose-citrus-bark-diseases-cracking...

Citrus trees that have all their requirements met are still susceptible to a high number of insect pests, viral and fungal diseases and nutrient deficiencies that can cause bark deformities, peeling and scaling. Identification of the cause of bark problems is the first step to curing the issue. Step 1

www.bobvila.com/slideshow/7-signs-your-tree-is-dying-and-how-to-save-it-53337

Pests such as bark beetles and carpenter ants live in trees that are under stress or are in the process of dying. These pests prefer to live in dead, weakened, or dying hosts. As for fungal or ...

www.doityourself.com/stry/identifying-and-treating-ash-tree-diseases

Disease Treatment. Ash Yellow can be controlled only in its early stages. If the infection spreads to the main bark and the roots, there is little hope for rescuing the tree. If the symptoms are clearly visible, prune-off the affected parts of the tree. Spray anti-fungal spray on the foliage surrounding the pruned site.