The codling moth, Carpocapsa pomonella (L.) a persistent pest in apple orchards throughout the North-American continent, has been a source of concern tor over a century. For many years lead arsenate was used to control but gradually became less effective as the insect developed resistance (Hough, 1929). DDT, after its introduction in 1945, gave excellent control and is now the most widely used insecticide against the pest. Its use, however, has not been without some disadvantages, chief of which are an upsurge of phytophagus mites, and to a less extent other pests such as the red-banded leafroller, due in large part to the destruction of natural enemies.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.110214 |
| Date | January 1956 |
| Creators | Hikichi, Akira. |
| Contributors | Morrison, F. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science. (Department of Biology.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
Page generated in 0.0093 seconds