. Bulletin. Forests and forestry. 68 College of Forestry northern states a& far west as North Dakota. It attacks practically all species of native and cnltivated willows, pop- lars and alders and also breeds to some extent in dwarf birch and red birch. Its principal injuries have been to poplars and willows in nurseries, to basket willow in plantations and. Fig. 32. Showing the dead areas in the bark of willow and the gall- like swellings due to the work of the larvae of the mottled willow and poplar borer. About one-fourth natural size. (Original) to the various species of willow and popl
. Bulletin. Forests and forestry. 68 College of Forestry northern states a& far west as North Dakota. It attacks practically all species of native and cnltivated willows, pop- lars and alders and also breeds to some extent in dwarf birch and red birch. Its principal injuries have been to poplars and willows in nurseries, to basket willow in plantations and. Fig. 32. Showing the dead areas in the bark of willow and the gall- like swellings due to the work of the larvae of the mottled willow and poplar borer. About one-fourth natural size. (Original) to the various species of willow and poplar when used as shade trees or as wind breaks. Indications of the work of this borer are seen in dead or dving limbs, and in the ])resence of irreo:ular swollen places and of dead p'atches of the bark ujion the limbs or trunk. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original State University College of Forestry at Syracuse University. Syracuse, N. Y.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
