Fungal diseases raspberries

Soilborne fungal disease, which enters through cracks in bark, or wounds caused by the raspberry midge. It is spread by rain-splash and on tools. 

Fruit covered with a powdery w hite coating. Cause Powdery mildew. This fungal disease, most common on red raspberries, makes fruit inedible and may weaken or kill whole canes. Pruning out old canes to provide good air circulation aids control. To prevent the disease, apply sulfur dusts. To control e.xisting infection, apply lime-sulfur spray. Resistant cultivars... 

Cane blight causes canes with large, brownish purple areas extending over several buds. This fungal disease, most common on black raspberries, usually enters through a wound. Sideshoots may wilt and entire canes may die. 

Leaf undersides with bright orange pustules. Cause Orange rust. This incurable fungal disease appears only on black or purple raspberries, and blackberries. Diseased plants never recover infection spreads quickly to neighboring plants. Dig up and destroy plants as soon as you notice disease symptoms. Install new plantings well away from wild brambles, which are a source of infection. 

New canes die in midsummer. Cause Verticillium wilt. Typically leaves yellow, wilt, and fall before the entire cane dies. There is no cure for this soilbome fungal disease, which may be carried by other host plants such as tomatoes, potatoes, peppers, or eggplants.. A% oid planting raspberries where other erticillium host plants formerly grew. For extra precaution. solarize the soil to kill the fungus before planting (see Soil Solarization" on page 424. See... 

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