SUGGESTIONS FOR TIMBER OWNERS.

1. It is always advisable in cutting blighted chestnut to clean up the

ground thoroughly and burn all infected material, for the sake of the

future crop and the community as a whole. Even if financial reasons

make it impossible to treat the stumps properly, the brush and refuse

should be burned, and all merchantable material removed from the tract

within a reasonable period. Where the percentage of blight is very

high, it is advisable to cut all the chestnut trees rather than attempt

to remove only the diseased trees.

2. Stumps should not be cut higher than the diameter of the tree, but

this may be impracticable in sprout growth timber. A low stump saves

the best end of the log, and causes the succeeding generation of

sprouts to be firmly rooted.

3. Where practicable, all timber should be peeled. Poles, ties, posts

and rails, should be skidded to one or more convenient places. The bark

and chips collected at these points should be burned, since this refuse

is very frequently the breeding place of the blight fungus.

4. It is advisable to remove all bark from the stumps down to the

mineral soil, to prevent the further spread of the disease by its

growth on this bark. Unpeeled stumps, even if free from blight at the

time the tree is felled, are very apt to become infected, and the

disease will then eventually destroy the sprouts at the base. Stumps of

trees cut in winter while the bark is “tight” may be left until spring,

and peeled when the sap is ascending. Stumps made in summer should be

peeled at once.

5. All chestnut refuse, including the brush from the tops, bark from

stumps, chips, etc., should be collected and burned at as early a time

as may be done with safety from fire. Green tops of trees felled in

summer can be burned immediately by close piling over a well-started

fire. The danger of infecting the sprouts from the stump is lessened

if the fire be made over the stump after peeling. Stumps can be more

cheaply sterilized, however, by painting them with creosote, and

creosote also appears to be absolutely effective in keeping the stump

free from infection, whereas a fire seldom chars the base of the stump

sufficiently.

6. Woodsmen, while cutting and removing chestnut, should do as little

injury as possible to the remaining trees, whether large or small.

When the work is done by contract, trees carelessly broken in felling

chestnut should be paid for at their market value. Merchantable

chestnut left in the woods, either cut or uncut, when contracts call

for the removal of all of the same, should be paid for at its market

value.

7. Great care should be exercised in burning material so as not to

injure other trees, or allow fires to remain unwatched in the woods.

Forest fires may result, causing much damage. Burning should not be

done when the woods are very dry, or a high wind is blowing.

Final report of the Pennsylvania Chestnut Tree Blight Commission · 第 36 / 145 题