Report On the White Pine Weevil
Report On the White Pine Weevil
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In our eReader you can find the full English version of the book. Read Report On the White Pine Weevil Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Report On the White Pine Weevil
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Most of the pine is there planted in blocks of pure white pine, Scotch pine, or Western yellow pine. How- ever, in a small part of the plantation a dozen or so rows occur between two larger blocks of Scotch pine, and in still another place white pine and Scotch pine were planted in alternate rows. When examined, the injury by the weevil was serious in all of the blocks of pure white pine, while the other species showed no evidence of its attack. In the small block of white pine, surrounded by S...cotch pine, only a few leaders were killed, while in that plot where the two species had been planted in alternate rows, no evidence of attack by the weevil was found. The two sorts of pine had been planted at the same time, but the Scotch pine, on account of its more rapid early growth, had outstripped the white pine and, at the time observations were made, was several feet higher. The protection of the white pine from beetle attack was probably due either to the higher, denser growth of the other species, or possibly the odor of the Scotch pine predominated and acted as a deterrent to the weevil.
What to read after Report On the White Pine Weevil?
You can find similar books in the "Read Also" column, or choose other free books by M W Maulsby Willett Blackman to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Most of the pine is there planted in blocks of pure white pine, Scotch pine, or Western yellow pine. How- ever, in a small part of the plantation a dozen or so rows occur between two larger blocks of Scotch pine, and in still another place white pine and Scotch pine were planted in alternate rows. When examined, the injury by the weevil was serious in all of the blocks of pure white pine, while the other species showed no evidence of its attack. In the small block of white pine, surrounded by S...cotch pine, only a few leaders were killed, while in that plot where the two species had been planted in alternate rows, no evidence of attack by the weevil was found. The two sorts of pine had been planted at the same time, but the Scotch pine, on account of its more rapid early growth, had outstripped the white pine and, at the time observations were made, was several feet higher. The protection of the white pine from beetle attack was probably due either to the higher, denser growth of the other species, or possibly the odor of the Scotch pine predominated and acted as a deterrent to the weevil.
What to read after Report On the White Pine Weevil?
You can find similar books in the "Read Also" column, or choose other free books by M W Maulsby Willett Blackman to read onlineMoreLess
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