We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Impact of 2,4-D on Ceuthorhynchidius horridus (Coleoptera: Curculionidae) and their compatibility for integrated control of Carduus thistles.
- Authors
Trumble, J. T.; Kok, L. T.
- Abstract
Acute and chronic effects of spring application of 2,4-D on adult <em>C. horridus</em> (Panzer) were examined by determining dose-mortality response and adult vitality, LC50 values for males (70·2 kg/ha) and females (61·4 kg/ha) corresponded to 41·7 and 36·6 times, respectively, the recommended application rate of 1·68 kg/ha. Survival of weevils treated with 1 ·68 kg/ha was not different from untreated controls, but higher doses (16·8-147·8 kg/ha) caused significantly greater mortality. Adult vitality, measured by number of feeding marks per weevil and rate of weight change, was unaffected by the herbicide. When thistle infested fields were sprayed with 1·68 or 2·24 kg/ha of 2,4-D the host plants died, but the survival, reproduction, and population increase of <em>C. horridus</em> were not affected.
- Subjects
CEUTHORHYNCHUS; THISTLES; BEETLES; PLANT resistance to insects; CARDUUS
- Publication
Weed Research, 1980, Vol 20, Issue 2, p73
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1980.tb00046.x