Bacterial Canker Sweet Cherry Cherry Tree Diseases
Several other names most commonly gummosis and sour sap have been used for the same disease.
Bacterial canker sweet cherry cherry tree diseases. Bacterial canker is a disease that affects cherry plum and other related fruit trees. What causes bacterial canker on cherry trees. The symptoms can be wide ranging and include sunken patches on the trunk and branches. The same bacterium also can cause a blight of many other fruit vegetable and ornamental crops.
Click the view it now button to view or download a print friendly page size pdf 85 x 11 inches. Host disease tolerance most of the sweet cherry cultivars grown in michigan are susceptible or highly susceptible to bacterial canker. The only cultivar with an observable level of tolerance is gold. Once inside the plant bacteria can spread throughout the plant.
Bacterial canker of sweet cherry in oregon r. This publication covers cause and symptoms disease cycle and disease management. Those sunken patches often release a sticky gummy substance. A careful inspection of the canker will help identify the disease.
Bacterial canker affects branches twigs buds leaves and fruit. The most conspicuous symptoms are the cankers and the dying branches they girdle. Bacterial canker which is also called gummosis is caused by the pathogen pseudomonas syringae. It is caused by the bacterium pseudomonas syringae.
Bacterial canker of cherry. If you see dark sunken cankers on young fruit trees your orchard may be infected. Al oregon state university extension factsheet em 9007 2010. These are the first sign of bacterial canker on cherry trees.
The main cherry diseases in california are blossom and ripe fruit rots caused by monilinia fructicola and monilinia laxa bacterial canker caused by pseudomonas syringae x disease caused by a phtyoplasma organism and phytophthora root and crown rot caused by phytophthora spp. Examples of bacterial fruit tree diseases are fire blight and bacterial spots and cankers. Common tree fruit bacterial diseases fire blight. Symptoms on sweet cherry trees.
X disease phytoplasma causes this disease which is spread by leafhoppers budding. Lesions form on the trunk or primary branches of cherry trees and may bleed a gummy residue. X disease attacks peach nectarine sweet and sour cherries and chokecherry. Although bacterial canker is more serious on sweet cherry trees it also affects almonds apricots peaches plums and prunes.
Bacterial canker is a disease caused by the bacterium pseudomonas syringae pv.