Method of application of carbolineum After many trials it was found that the simplest method of application of carbolineum was by the use of cotton waste. Carbolineum is noninjurious to the hands, and each workman carried a small quantity of the material in a dipper or a tin can. The cotton waste was dipped into the material and then rubbed carefully up and down the trunk of the tree. It is usually not necessary to go higher than four or five feet, but great care should be exercised to see that the base of the tree is well treated and all parts of the trunk are well covered. At the same time the material should not be allowed to run down to the roots. After the trees are pruned workmen can apply the material at a very rapid rate. It is preferable to make the application on a warm day, as under this condition the carbolineum is thinner and may be more easily applied. Cost of treatment It was at first thought that the cost of the treatment might prevent its use under nursery conditions, inasmuch as poplars are not very highpriced stock. In one nursery a careful account of the entire cost of treatment was kept. This was as follows: It is thus seen that the cost per tree is extremely small, not exceeding two-tenths of a centa practically negligible charge. SUMMARY The poplar and willow borer is a European pest recently introduced into America and at present widely distributed in the northeastern United States. It is proving a serious pest not only in nurseries but also wherever willows or poplars are grown. A very effective means for control of the insect is the use of carbolineum avenarius. In nurseries this should be applied by hand during the latter part of March or the first week in April. The work can be done most advantageously just after the trees are pruned. In setting out poplar trees they should be treated with carbolineum in order to insure the destruction of all larvæ present. This can be done either in the fall or in the spring while the trees are dormant. The item of cost has been shown to be extremely small, not exceeding two-tenths of a cent per tree under nursery conditions. BIBLIOGRAPHY ALTUM, BERNARD. Cryptorhynchus. In Forstzoologie. III. Inseckten I:220-224. 1881. BARBEY, A. Cryptorrhynchus Lapathi L. In Traité d'entomologie forestière, p. 550-553. 1913. BECHSTEIN, JOHANN MATTHÄUS, UND SCHARFENBERG, GEORG LUDWIG. Der Ampfer-Rüsselkäfer. In Vollständige Naturgeschichte der 1804. schädlichen Forstinsekten 1:168-169. BLATCHLEY, W. S., AND LENG, C. W. Rhynchophora or weevils of northeastern America, p. 510. 1916. 1904. BUES, CHRISTIAN, AND SANDSTEN, E. P. Sixth annual report of the nursery inspector for the State of Wisconsin. In Wisconsin Univ. Agr. Exp. Sta., Ann. rept. 21:271-278. BURGESS, A. F. (No title.) In Proceedings of the fifteenth annual meeting of the Association of Economic Entomologists. U. S. Dept. Agr., Div. Ent. Bul. 40:52. 1903. Notes on economic insects for the year 1903. In Proceedings of the sixteenth annual meeting of the Association of Economic Entomologists. U. S. Dept. Agr., Div. Ent. Bul. 46:62-65. 1904. CAESAR, L. The imported willow and poplar borer or curculio (Cryptorhynchus lapathi L.). Ent. Soc. Ontario. Ann. rept. 46 (1915):33-40. 1916. CALWER, C. G. Cryptorhynchus Illig. In Käferbuch, 4th ed., p. 468. 1883. CHITTENDEN, F. H. Insects injurious to basket willow. In The basket willow. U. S. Bur. For. Bul. 46:63-80. 1904. CURTIS, WILLIAM. Some observations on the natural history of the Curculio Lapathi and Silpha grisea. Linnean Soc. (London). Trans. 1:86-89. 1791. FELT, E. P. Mottled willow borer. In Insects affecting park and woodland trees. New York State Museum. Memoir 8:100-103. 1905. FERNALD, C. H., AND FERNALD, H. T. Insects of the year. In Report of the entomologists. Massachusetts Agr. Coll., Hatch Exp. Sta. Ann. rept. 16 (1903):106–109. 1904. FLETCHER, JAMES, AND GIBSON, ARTHUR. Entomological record 1908. Ent. Soc. Ontario. Ann. rept. 39 (1908):99–116. (Reference on p. 109.) 1909. FORBES, STEPHEN A. The poplar and willow borer. In Some important insects of Illinois shade trees and shrubs. Illinois Agr. Exp. Sta. Bul. 151:502–506. 1911 a. The poplar and willow borer. Illinois State Ent. Rept. 26:40-44. 1911 b. GIBSON, ARTHUR. The entomological record, 1911. Ent. Soc. Ontario. Ann. rept. 42 (1911):89-112. (Reference on p. 102.) 1912. GILLANDERS, A. T. Cryptorrhynchus lapathi. In Forest entomology, p. 82-83. 1908. GOUREAU, (No title.) Soc. Ent. France. Ann. 4 ser.:7: Bulletin entomologique, p. LXXXIV-LXXXV. 1867. HEYDEN, LUCAS VON. Cryptorrhynchus Illig. In Catalog der Coleopteren von Sibirien, p. 176. 1880-1881. HOWARD, L. O. Further damage by Cryptorhynchus lapathi. Insect life 7:430. 1895. JACK, J. G. A willow pest. Gard. and for. 10:394. 1897. KALTENBACH, J. H. Cryptorhynchus lapathi, L. In Die Pflanzenfeinde aus der Klasse der Insekten, p. 513, 563, 612. 1874. KIRKLAND, A. H. Cryptorhynchus lapathi (L.) in Massachusetts. Psyche 8:371-372. 1899. The shade-tree insect problem. Massachusetts State Bd. Agr. Ann. rept. 49:77-107. (Reference on p. 95–96.) 1902 a. Notes on four imported pests. In Proceedings of the thirteenth annual meeting of the Association of Economic Entomologists. U. S. Dept. Agr., Div. Ent. Bul. 31:93-97. 1902 b. LINNÉ, CARL VON. Systema naturæ per regna tria naturæ, 10th ed. 1:1-823. (Reference on p. 379.) 1758. LOUDON, J. C. (No title.) In Arboretum et fruticetum Brittanicum 3:1479-1481. 1854. MATHESON, ROBERT. Experiments in the control of the poplar and willow borer (Cryptorhynchus lapathi Linn.). Journ. econ. ent. 8:522525. 1915. MUNRO, JAMES W. Cryptorrhynchus lapathi, L., in Aberdeenshire. Ent. mo. mag. 49:257. 1913. The variegated willow weevil (Cryptorhynchus lapathi L.). Gard. chron. 55:27. 1914. NÖRDLINGER, HERMANN VON. Cryptorhynchus lapathi L. In Nachträge zu Ratzeburg's Forstinsekten, p. 15-16. 1856. NÜSSLIN, OTTO. Unterfamilie Cryptorhynchini. In Leitfaden der Forstinsektenkunde, p. 193-196. 1913. OSBORN, HERBERT. Brief notes on Ohio insects for 1904. In Proceedings of the seventeenth annual meeting of the Association of Economic Entomologists. U. S. Bur. Ent. Bul. 52:49–51. 1905. PARROTT, P. J. Investigations of the Department of Entomology. In New York (Geneva) Agr. Exp. Sta. Ann. rept. 26: 19. 1908. PATCH, EDITH M. Cryptorhynchus lapathi. In Insect notes for 1908. Maine Agr. Exp. Sta. Bul. 162:363. 1908. PAYKULL, GUSTAVO DE. Curculio Lapathi. In Monographia curculionum, p. 37-38. 1792. PIERCE, W. DWIGHT. A list of parasites known to attack American Rhynchophora. Journ. econ. ent. 1:380-396. (Reference on p. 390.) 1908. RATZEBURG, JULIUS THEODOR CHRISTIAN. Curculio Lapathi Linn. I Die Forst-Insecten 1:155. 1839. Die Waldverderbniss 2. (Reference on p. 247-250.) 1868. RYE, E. C. British beetles, p. 1-280. (Reference on p. 192.) 1866. SCHEIDTER, FRANZ. Über Generation und Lebensweise des bunten Erlenrüsslers, Cryptorhynchus lapathi L. Naturw. Zeitsch. Forst. u. Landw. 11:279-300. 1913. SCHOENE, W. J. The poplar and willow borer. New York (Geneva) Agr. Exp. Sta. Bul. 286:83-104. 1907 a. The willow borer as a nursery pest. In Proceedings of the nineteenth annual meeting of the Association of Economic Entomologists. U. S. Bur. Ent. Bul. 67:27-28. 1907 b. SCHWÄGRICHEN, [C. F.]. Ueber den Cryptorhynchus Lapathi und seine Verwüstung des Erlenholzes. Arch. Naturgesch. 11:337-343. 1845. SHELFORD, VICTOR E. Animal communities in temperate America as illustrated in the Chicago region. Geog. Soc. Chicago. Bul. 5:1-362. (Reference on p. 267.) 1913. SMITH, J. B. (No title.) Can. ent. 23:221. 1891. TASCHENBERG, E. P. In Brehm's Thierleben 9:152-153. 1884. THEOBALD, F. V. Animals injurious to forest trees. Wye Agr. Coll. Rept. econ. zool., p. 78-80. 1905. WASHBURN, F. L. The mottled willow borer, an introduced enemy to carolina poplars and willows. Minnesota State Ent. Ann. rept. 9:115-119. 1904. Injurious insects in Minnesota in 1904. In Proceedings of the seventeenth annual meeting of the Association of Economic Entomologists. U. S. Bur. Ent. Bul. 52:55-57. 1905. WEBSTER, F. M. Tenacity of life in adults of Cryptorhynchus lapathi. New York Ent. Soc. Journ. 5:30. 1897. The imported willow and poplar curculio. Soc. Journ. 16:146-155. 1901. Columbus Hort. The imported willow and poplar curculio, Cryptorhynchus lapathi Linn. Ent. Soc. Ontario. Ann. rept. 32 (1901):67-73. 1902. WESTWOOD, J. O. An introduction to the modern classification of insects 1:1-462. (Reference on p. 343-344.) 1839. (No title.) Ent. Soc. London. 165. 1863. Trans. 3 ser.: 1: Proc. 1863: The willow boring beetle. Gard. chron. 1864:52. 1864. |