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Show Answer by Prof. Northrop, A. C. U. Cherry trees and other stone fruits often show the disease which goes by the common name of Gummosis. The symptoms arc bleeding of sap or gum which will become hard ana often is followed by a very week condition con-dition of the tree, which sometimes is of such seriousness that the tree dies. The exact cause of this trouble not known, but indications point ) the fact that it is due to an uneven growth or devclopcment. I would suggest as a preventative that the irrigation ir-rigation be closely watched and a thorough cultivation be given, endeavoring en-deavoring to promote an absolute uniform growth through the season. If during the hotter part of the summer, sum-mer, the symptoms of the disease appear, I would give particular attention atten-tion to the culture of tjic trees from that time and' would slit the bark from an inch or two above the ground up to the main -branches, allowing the growth force to cause the bark to expand, thu promoting a uniform devclopcment. The peach trees which you state are turning yellow at the tops and then descending until the tree dies, give indications of having too much vwiter. While your letter states explicitly ex-plicitly that the soil is very gravelly, I would not b aurprisd to find that there was a clay sub-soil which was . .. holding the water in too great an abundance. If this is the trouble, I would like to hear from the grower, giving more complete description of the conditions. , T) |