. The Conference Called by the Governor of Pennsylvania to Consider Ways and Means for Preventing the Spread of the Chestnut Tree Bark Disease : the Capitol, Chamber of the House of Representatives, Harrisburg, Pennsylvania, February 20 and 21, 1912 : stenographic report of proceedings of the conference. Chestnut blight. growing tree is more resistant, observations seem to prove that soil fertilization alone is not a cure. The principal remedies and treat- ments advocated are being given a thorough test by this Commis- sion, and should any of them be found successful, the public will be so inf
. The Conference Called by the Governor of Pennsylvania to Consider Ways and Means for Preventing the Spread of the Chestnut Tree Bark Disease : the Capitol, Chamber of the House of Representatives, Harrisburg, Pennsylvania, February 20 and 21, 1912 : stenographic report of proceedings of the conference. Chestnut blight. growing tree is more resistant, observations seem to prove that soil fertilization alone is not a cure. The principal remedies and treat- ments advocated are being given a thorough test by this Commis- sion, and should any of them be found successful, the public will be so informed. At the present time, however, we can recommend noth- ing but the treatment herein outlined, which will have to be carried out thoroughly if any considerable degree of success is to be attained. The work can be done by the owner himself in some cases, especially if the trees are small or easily climbed. A good working knowledge of the characteristics of the disease is essential, but the owner can be sure when he does the work himself that the proper precautions are takeji. The owner should ^also make numerous examinations after the first treatment is concluded, and should be in a position to remove the incipent infections, when this can be done cheaply and before the trees are much harmed. TREATMENT The treatment consists principally in cutting away the infected portions of the tree. The mycelium quickly discolors the bark and a sharp line between the apparently healthy and infected bark is usually seen. However, the mycelium penetrates into the apparently healthy bark, and if possible, the cut should be made one inch or more beyond the discolored area. The mycelium also works to some extent into the sapwood below the discolored area, and three or more an- nual layers of wood should be removed as well. The smaller infected branches should be cut ofif one foot or more below the canker, when possible. If these branches are cut off at the base, flush with the tree, the wound
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