. Bulletin. Forests and forestry. 48 College of Forestry has reached full growth it is about three-fourths of an inch long. The adult which emerges in the latter part of May and in June, is a slender greenish-bronze beetle from 2/5 inch to nearly % ii^<^^ ^o^g (^ig- 1^)- In the adult stage it does no appreciable harm but may occasionally be seen feeding upon the leaves of poplars, willows, elms and birches. Control Measures.— After these borers once get into a tree in any considerable Fig. 18. Larva of bronze birch-borer. About six times natural size. (Original). Fig. 19. Adult of bronze bi
. Bulletin. Forests and forestry. 48 College of Forestry has reached full growth it is about three-fourths of an inch long. The adult which emerges in the latter part of May and in June, is a slender greenish-bronze beetle from 2/5 inch to nearly % ii^<^^ ^o^g (^ig- 1^)- In the adult stage it does no appreciable harm but may occasionally be seen feeding upon the leaves of poplars, willows, elms and birches. Control Measures.— After these borers once get into a tree in any considerable Fig. 18. Larva of bronze birch-borer. About six times natural size. (Original). Fig. 19. Adult of bronze birch-borer. About six times natural size. (Original) numbers it has been found impossible to save it by any means thus far devised. Experience has shown that after the tree begins to die at the top from the attack of these borers, noth-. 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.
Size: 1227px × 2036px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
