(U.S. DEPARTMENT OF AGRICULTURE., 1975-04-30) Agriculture, U.S. department
The most effective control measures for raspberry and blackberry diseases are those taken before the diseases become serious. Varieties adapted to a locality and
resistant to the major diseases should be planted, if available. Plants certified as being substantially disease free by a State plant inspection service should be used. Cultural practices that promote vigorous growth are also important in growing healthy raspberries and blackberries.