Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-05T13:09:57.228Z Has data issue: false hasContentIssue false
  • English
  • Français

MORTALITY OF THE EUROPEAN RED MITE (ACARINA: TETRANYCHIDAE) RELATIVE TO DISTRIBUTION AND DEGRADATION OF DICOFOL DEPOSITS ON PEACH LEAVES

Published online by Cambridge University Press:  31 May 2012

D. C. Herne  and
Mikio Chiba
D. C. Herne
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario
Mikio Chiba
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario
Get access Rights & Permissions [Opens in a new window]

Abstract

Mortality of the European red mite, Panonychus ulmi (Koch), on peach leaves was directly related to the uniformity of distribution and amount of deposit of dicofol for up to 4 days after the spray was applied. Mite mortality decreased rapidly from the 4th to the 11th day after spraying, whereas the dicofol detected by chemical analysis decreased at a slower rate. The minimum deposit of dicofol for 100% kill of the mite, immediately after spraying, was between 0.3 and 0.8 μg/cm2, depending upon uniformity of coverage. Doubling the dose did not increase the mortality then or later. Fourteen days after spraying, the dicofol deposit on some leaves was still 0.7–0.8 μg/cm2 but there was practically no mite mortality.

Type
Articles
Information
The Canadian Entomologist , Volume 107 , Issue 8 , August 1975 , pp. 801 - 806
Copyright
Copyright © Entomological Society of Canada 1975

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Chiba, M. 1971. An analytical chemist's contribution to applied entomology. Proc. ent. Soc. Ont. 101: 24–27.Google Scholar
Chiba, M. 1974. Studies on spray deposits: Distribution of spray deposits in peach trees and number of leaves that constitute an adequate sample. J. econ. Ent. 67: 529–534.CrossRefGoogle Scholar
Ebeling, W. 1963. Analysis of the basic processes involved in the deposition, degradation, persistence, and effectiveness of pesticides. Residue Revs 3: 35–163. Springer-Verlag, New York Inc.Google Scholar
Fisher, R. W. and Hikichi, A.. 1971. Orchard sprayers. Ont. Dep. Agric. Food Publ. 373.Google Scholar
Fisher, R. W., Menzies, D. R., Herne, D. C., and Chiba, M.. 1974. Parameters of dicofol spray deposit in relation to mortality of European red mite. J. econ. Ent. 67: 124–126.CrossRefGoogle Scholar
Harris, C. R. 1966. Influence of soil type on the activity of insecticides in soil. J. econ. Ent. 59: 1221–1225.CrossRefGoogle Scholar
Herne, D. C. 1973. Methodology for assessing resistance in the European red mite, pp. 663–667. In Daniel, M. and Rosicky, B. (Eds.), Proc. 3rd int. Congr. Acarology (Prague, 24–30 August 1971). Junk, The Hague.CrossRefGoogle Scholar