Raspberry: Anthracnose categories: Raspberry Raspberry Diseases Small Fruits revision date: 2022-12-07 12:00 Raspberry anthracnosePhoto by: R.S. Byther Biology Anthracnose is a fungal disease. It occurs primarily on raspberry canes, but can also affect leaves and fruit. Initial infections typically occur on the lower portions of canes toward the inside of the plant. Canes show small, […]
Raspberry: Boron deficiency categories: Raspberry Raspberry Diseases Small Fruits revision date: 2022-12-07 12:00 Boron deficiency symptoms on leavesPhoto by: R.S. Byther Biology Boron deficiency affects the level of growth hormones in plant tissue, as well as pollen tube growth. Bud break in the spring is delayed, and many buds die off. Other symptoms include abnormal […]
Raspberry: Fruit rot and cane Botrytis categories: Raspberry Raspberry Diseases Small Fruits revision date: 2022-12-07 12:00 Botrytis on fruitPhoto by: R.S. Byther Biology Fruit rot is caused by a fungus. The disease is characterized by a watery, soft rot of infected fruit, either in the field or in storage. In moist conditions, the diseased fruit […]
Raspberry: Phytophthora root rot categories: Raspberry Raspberry Diseases Small Fruits revision date: 2022-12-07 12:00 Phytophthora root rot on raspberryPhoto by: R.S. Byther Biology Phytophthora root rot can be a problem in the Pacific Northwest when raspberries are planted in areas with poor drainage. The fungus attacks the fine roots, which rot and die. Infected root […]
Raspberry: Powdery mildew categories: Raspberry Raspberry Diseases Small Fruits revision date: 2022-12-07 12:00 Powdery mildew on raspberryPhoto by: R.S. Byther Biology Powdery mildew is a fungal disease which can affect leaves, shoot tips, new canes, and fruit of red and black raspberries, blackberries, and hybrids including ‘Logan’ berries. Leaves show pale green to watersoaked spots […]
Raspberry: Spur blight categories: Raspberry Raspberry Diseases Small Fruits revision date: 2022-12-07 12:00 Raspberry spur blightPhoto by: R.S. Byther Biology In early April, pin-point size black fruiting bodies (perithecia) can be found in the gray affected areas of cane tissue. The fruiting bodies release ascospores, which infect leaves on both fruiting canes and primocanes. Brown […]
Raspberry: Yellow rust categories: Raspberry Raspberry Diseases Small Fruits revision date: 2023-05-03 12:00 Raspberry rustPhoto by: R.S. Byther Biology Yellow rust is a fungal disease of the leaves and succulent tissues of red raspberries. Leaf infections occur in the spring, causing a yellowish to orange spotting on the upper surfaces. On the lower surface of […]