Plum, Prune (Fresh): Armillaria root rot categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 White fungal mat of Armillaria root rot infecting trunkPhoto by: C.R. Foss Biology Armillaria root rot is a fungal disease often found in newly cleared soils or soils which have been flooded. Aboveground symptoms typically […]
Plum, Prune (Fresh): Bacterial canker categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Sunken area on trunk from bacterial canker infectionPhoto by: R.S. Byther Biology Bacterial canker can infect twigs, branches, fruit, or the trunk. Elongate, dark, purplish cankers develop during early spring, often producing bacterial ooze in wet […]
Plum, Prune (Fresh): Black knot categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Mature black knot on twigPhoto by: R. Byther Biology Black knot is a fungal disease that infects cherry and plum. Early infections of twigs are elongated olive-green, corky knots. They turn black and hard as they […]
Plum, Prune (Fresh): Brown rot categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Brown rot mummified plumPhoto by: R.S. Byther Biology Brown rot is a blossom-infecting fungal disease. Infected flowers first appear water-soaked, then wilt and die. The light brown blossoms remain attached to the twigs, becoming covered with […]
Plum, Prune (Fresh): Crown gall categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Large gall on crownPhoto by: R.S. Byther Biology Crown gall is caused by a soilborne bacterium. The bacteria infect through wounds on the crown and roots. Young galls are fleshy, white, enlarged masses on the roots […]
Plum, Prune (Fresh): Cytospora canker categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Cytospora-infected peach twigsPhoto by: R.S. Byther Biology The fungi which cause Cytospora canker attack through wounds on twigs and branches. Initial cankers are small, but enlarge quickly and may streak up and down the stems without […]
Plum, Prune (Fresh): Plum pockets categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Plum pocket infected fruitPhoto by: R.S. Byther Biology Plum pockets is a fungal disease affecting fruit, twigs, and leaves. Infected fruit initially develop small, white spots which rapidly enlarge. The spots later turn reddish to velvety […]
Plum, Prune (Fresh): Russeting categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Fruit russeting on plumPhoto by: R.S. Byther Biology Russeting of plum can be caused by several factors. Rain during the period of full bloom, mechanical rubbing against other fruit or branches caused by wind, or other injury […]
Plum, Prune (Fresh): Shothole (Coryneum blight) categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Coryneum blight symptoms on leaves and fruitPhoto by: R.S. Byther Biology Coryneum blight is a fungal disease. Lesions on leaves are initially small, purplish, round to oval areas which expand into brown spots with light […]
Plum, Prune (Fresh): Silver leaf categories: Plum, Prune (fresh) Plum, Prune (Fresh) Diseases Tree Fruits revision date: 2022-12-05 12:00 Silver leaf symptoms on leavesPhoto by: R.S. Byther Biology Silver leaf is a fungal disease affecting cherry, apricot, plum, and other stone fruits. The fungus typically grows on dead wood, but it can infect living tissues […]