This section is from the book "The Gardener's Monthly And Horticulturist V21", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
In our travels recently we came on a gardener who believed he had discovered the cause of a common disease in raspberries. Half of a row was making no canes for next year, the leaves had a curled up look, and the whole bush miserable, though ripening fruit after a fashion. He dug some of the roots for us, and found them spotted in many places with decay. We had not the means of detecting then whether this decay was from insects or fungus, or other enemies; but the roots were in a bad condition, and no doubt had something to do with the sickly tops.