Annual report ..[bulletins and circulars] . ^^ .v I ->^^~*—r^—^^^^9^^^ r!. 2l6 Bulletin When applied. Numberof treestreated. When examined. Number of trees infested. Number of borers found. Effect of applicationon trees. 10 July, 1896. 50 22-30 June, 1897 0 0 Killed every tree We must conclude that neither raupenleim nor its imitation, dendrolene(the kind now on the market) is a safe application for young figure 56 is shown the effect of the application of these substances onour trees. Pine Tar.—We used some pure North Carolina pine tar as a washwith the follow
Annual report ..[bulletins and circulars] . ^^ .v I ->^^~*—r^—^^^^9^^^ r!. 2l6 Bulletin When applied. Numberof treestreated. When examined. Number of trees infested. Number of borers found. Effect of applicationon trees. 10 July, 1896. 50 22-30 June, 1897 0 0 Killed every tree We must conclude that neither raupenleim nor its imitation, dendrolene(the kind now on the market) is a safe application for young figure 56 is shown the effect of the application of these substances onour trees. Pine Tar.—We used some pure North Carolina pine tar as a washwith the following results : When applied. Numberof treestreated. When examined. Number of trees infested. Number of borers found. Largest number of borers in one tree. Effect ofapplica-tion ontree. 7 July, 1898. 34 26 May, June, 1899. 13(38%) 19 3 None Years. Untreated or Check Trees. 1898-1899 56 Same dates. 25(44)% 41 3 Apparently the pine tar kept out a few borers, but not enough to warrantits being recommended as a preventive of the peach-tree borer. Gas Tar.—Tar was amo
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherithac, bookyear1899
