File:The publications of the Pennsylvania chestnut tree blight commission, 1911-1913 (1915) (14742974896).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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ltree should be inspected by a competent employee of this Commis-sion, but in shipping it has been required also that every individualtree should be tagged. A copy of the revised regulations governingthe inspection and shipment of nursery stock is appended to thisreport, which shows the form of tags required to be attached both toindividual trees and to bundles of trees. The fact that several ofthe most serious infections in the State have been caused heretoforeby the planting of diseased nursery stock in new localities is suf-ficient reason for so rigid an inspection. DISCOVERY OF THE CHESTNUT BLIGHT IN CHINA. It has recently been proved by authentic specimens and artificialcultures of the material transmitted by the Explorer of the U. S.Department of Agriculture, that the chestnut blight exists in East-ern China.* This fact makes it all the more probable that the be-ginning of the disease in this country may have come about by the ♦Science, Vol. 36, No. 937, p. 825, Dec. 13, 1912.
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Winter condition of a cliestnut tree with a blight-girdled top. 29 introduction of such diseased stock from China or Japan. Thatnew centers of infection are often started by the introduction ofdiseased nursery stock, is a common observation. PROTECTION OF ORCHARDS AND NURSERIES. It has been the policy of the Commission for sometime to protectorchards and nurseries from outside infection in all cases where theowners have expressed a desire for such protection, and have them-selves taken care to control the disease as much as possible. Thiswork has been successful much beyond our expectations. The largestand most important orchards thus protected are located atSunbury, Paxinos, and Berwick. The owners of neighboring foresttracts have been required to remove all diseased chestnut treeswithin one-half mile of the nearest point of the orchard in each case.An interesting result in one of the most important of these cases isthe fact that these owners have been able to sell the products ofth

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