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Show Most Satisfactory Control. While sprayiug may be a safeguard ngainst infection, the most satisfactory satisfac-tory control of black knot is to prune off and immediately burn the Infected twigs and 'limbs. When this Is done In the fall or winter, the source of infection in-fection is removed. In "doing this pruning, it must be remembered that the tiny, little knots so easy to overlook over-look on the fruit spin's, . are capable of keeping up the infection. Watch for the little knots on the twigs, and cut them out. Bum all of the primings prim-ings at once, otherwise they will liberate lib-erate spores just the same as if they had not been cut off. .' |