File:The publications of the Pennsylvania chestnut tree blight commission, 1911-1913 (1915) (14742990486).jpg

Identifier: publicationsofpe00penn (find matches)
Title: The publications of the Pennsylvania chestnut tree blight commission, 1911-1913
Year: 1915 (1910s)
Authors: Pennsylvania. Chestnut tree blight commission
Subjects: Chestnut blight Chestnut blight
Publisher: Harrisburg : W. S. Ray, state printer
Contributing Library: Penn State University
Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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unpeeled stumps. This is shown by the location ofthe infection on the sprouts as follows: 90 ^ TABLE VII. INFECTION ON SPROUTS AROUND STUMPS OF BLIGHTEDTREES CUT AT HUMMELSTOWN, PA. PEELED STUMPS. Infected Sprouts. 5 .s s stump Number. 3 2 o a ao u a ■g 0 <u o a Ol •a J3 Hi 05 ^ y. M Z m Average, 42 5 11 28 0 0 35 4 7 20 4 1 11 0 3 12 2 0 50 0 2 10 0 2 15 1 3 28 0 0 26.1 1.2 2.9 UNPEELED STUMPS. 15 4 3 24 0 4 30 1 0 10 0 2 2 0 0 46 0 4 54 1 3 55 1 1 23 0 1 40 1 3 29.9 .8 2.1 The investigation at Hummelstown shows that there is littleor no difference in the number and vigor of the sprouts producedby peeled and unpeeled stumps. In many cases, the sprouts reacheda height of six feet or more in a single years growth. The sproutsfrom peeled stumps frequently spring from the roots, 2 to 4 inchesfrom the stump, and push through three inches or more of soil.This will undoubtedly aid in keeping them free from disease, andthe new growth will be better rooted than ordinary stump sprouts.
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91 RECOMMENDATIONS. It has been shown that with the less effective methods of cuttingout spot infections used in the beginning of its work by the Penn-sylvania Chestnut Tree Blight Commission, the amount of blighthas been substantially reduced. It is reasonable to suppose thatmuch more efficient results will be obtained by using the methodswhich have been developed by experience, and which are recom-mended in this report: (1) Cutting out all chestnut trees inside the limits of a spotinfection, also immediately beyond, regardless of whether or notthey all show visible signs of the blight. (2) Great care in peeling the stumps and in burning or removingfrom the woods all felled portions of the treated trees. (3) Thorough disinfection of the peeled stumps, preferably byburning. (4) A force of well-trained and experienced men to do both thescouting and sanitation cutting. KEGULATING SHIPMENTS OF CHESTNUT NUR- SERY STOCK. The Commission issued the appended official regulations for thebetter

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