|
I have compiled the most common hardwood tree diseases you might find in yard and forest. You can do a lot to prevent and control hardwood disease including canker disease. Here is how. ... The term "canker" is used to describe a killed area or blister on the bark, a branch or the trunk of an infected tree.
|
forestry.about.com/od/forestdiseases/p/dis_com_ca.htm
|
|
|
|
|
A canker is a localized area on a stem or branch of a tree where bark is sunken or missing. Cankers are caused by wounding or disease. The presence of a large canker increases the chance of the stem or branch breaking near the canker. ... Canker Tree Disease - Prevention and Control...
|
forestry.about.com/b/2007/07/23/tree-stem-cankers.htm
forestry.about.com/b/2007/07/23/tree-stem-cankers.htm
|
|
|
Most canker diseases are caused by fungi, which grow between the tree's bark and the ... trees, canker-infested areas appear dark or discolored ...
|
www.extension.iastate.edu/Publications/SUL11.pdf
|
|
5). A tree with a canker that encompasses more than half of the tree's circumference may be hazardous even if exposed wood appears sound. ... Figure 5. The large canker on this tree has seriously weakened the stem.
|
www.na.fs.fed.us/spfo/pubs/howtos/ht_haz/ht_haz.htm
|
|
This site was designed to provide a place to learn about the anatomy and physiology of tree bark, fungal canker diseases that affect tree bark, the wound responses of injured tree bark, and the role of wound responses in the resistance of living tree bark to wound pathogens.
|
Canker diseases in trees ... Canker diseases are common on Colorado trees. Cankers appear as sunken areas ... Several branches on one side of the tree might be affected, or a branch here and there might show symptoms. If symptoms are present, look for cankers on branches or the trunk on the side of the tree that's affected.
|
www.colostate.edu/Dept/CoopExt/4dmg/Pests/Diseases/cank...
www.colostate.edu/Dept/CoopExt/4dmg/Pests/Diseases/canker.htm
|
|
Forest and Shade Tree Pathology ... How do canker pathogens get in? ... Types of canker diseases...
|
www.forestpathology.org/canker.html
www.forestpathology.org/canker.html
|
|
Rootstock blight is associated primarily with the highly susceptible rootstocks such as M.26 and M.9. On these trees, just a few blossom or shoot infections on the scion cultivar can supply bacteria that move systemically into the rootstock where a canker may develop and girdle the tree.
|
www.nysaes.cornell.edu/pp/extension/tfabp/firepm.shtml
|
|
Cankers are localized dead areas, which may appear on the branches, twigs, or trunk of a tree. They can be caused by mechanical damage (especially weed whips and lawn mowers), environmental conditions (frost cracks, sunscald etc.), chemical injury, insects, ... Fig. 1. Canker on maple tree ; Photo: Chad Behrendt...
|
www3.extension.umn.edu/projects/yardandgarden/ygbriefs/...
www3.extension.umn.edu/projects/yardandgarden/ygbriefs/p421cankersontrees.html
|
|
