· Bright orangerust pustules will eventually be apparent on the lower side of the leaves of these plants. This is a good stage at which to dig out the entire infected plant, being careful to remove as much of the root system as possible. · In the spring, especially if it is cool and wet, look through your bramble patch for signs of the disease. Remove any infected plants, and spray the remaining plants with fungicide. Orangerust on black raspberries and blackberries can be a disastrous disease that can mean the removal of all diseased plants. It is characterized by bright orange spores that form on the undersides of the leaves. After removing orangerust infected plants in the spring, fungicides can be applied to prevent any remaining spores from infecting new plants. In fields with a history of orangerust, a fungicide spray program that coincides with the spring and fall infection periods is recommended. Orangerust (Gymnoconia nitens) resembles other rust fungi, infecting leaves, buds, and shoots of blackberry and black raspberry. Red raspberry is not susceptible. Efective management of orangerust involves a combination of cultural practices and, if necessary, chemical treatments. Early detection is crucial, so regular monitoring of bramble plants in early spring is recommended. Orangerust on black raspberries and blackberries can be a disastrous disease that can mean the removal of all diseased plants. It is characterized by bright orange spores that form on the undersides of the leaves. After removing orangerust infected plants in the spring, fungicides can be applied to prevent any remaining spores from infecting new plants. In fields with a history of orangerust, a fungicide spray program that coincides with the spring and fall infection periods is recommended. Orangerust (Gymnoconia nitens) resembles other rust fungi, infecting leaves, buds, and shoots of blackberry and black raspberry. Red raspberry is not susceptible. Efective management of orangerust involves a combination of cultural practices and, if necessary, chemical treatments. Early detection is crucial, so regular monitoring of bramble plants in early spring is recommended. · Management practices that improve air circulation, such as thinning out canes within the row, pruning out floricanes immediately after harvest, and effective weed control aid in disease control by reducing build-up of moisture in the planting.
