Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-30T23:58:45.320Z Has data issue: false hasContentIssue false
  • English
  • Français

EFFECTS OF APPLICATION DATE ON THE PERSISTENCE OF CLOFENTEZINE RESIDUES: IMPLICATIONS FOR MANAGEMENT OF RESISTANCE IN THE EUROPEAN RED MITE

Published online by Cambridge University Press:  31 May 2012

D.B. Marshall ,
D.J. Pree ,
B.D. McGarvey  and
H.M.A. Thistlewood
D.B. Marshall
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
D.J. Pree
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
B.D. McGarvey
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
H.M.A. Thistlewood
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
Get access Rights & Permissions [Opens in a new window]

Abstract

The effects of timing of applications on the persistence of chemical and biologically active residues of clofentezine were tested on apple foliage during two seasons. Residues from prebloom and petal fall applications were less persistent than those in mid-season. Early season applications were toxic to European red mite for 7–21 days but mid-season applications were toxic for as long as 50–62 days. Chemical residue losses were also faster in the early season. Persistence of chemical residues was related to the rate of leaf growth and expansion. In 1991, foliage area expanded 244% per week during the prebloom period, 23% per week at petal fall, and 10% per week in July (mid-season).In a field test, applications of clofentezine at petal fall reduced European red mite populations within 7 days and mite numbers remained below economic thresholds for 6 weeks.

Résumé

L’influence de la date d’application du clofentezine sur la persistance des effets chimiques et biologiques du produit a été testée durant deux saisons sur des feuilles de pommier. Les résidus d’une application effectuée avant la floraison ou durant la tombée des pétales sont moins persistants que les résidus d’une application effectuée à la mi-saison. Après une application hâtive, le produit reste toxique pour le tétranyque durant une période de 7–21 jours, alors qu’il reste toxique durant 50–62 jours après une application à la mi-saison. Les résidus chimiques disparaissent également plus rapidement après une application tôt dans la saison. La persistance des résidus est reliée à la vitesse de croissance et d’ouverture des feuilles. En 1991, la surface du feuillage a augmenté de 244% par semaine avant la floraison, de 23% par semaine au moment de la tombée des pétales et de 10% par semaine en juillet (mi-saison).Au cours d’un test sur le terrain, des applications de clofentezine au moment de la tombée des pétales ont entraîné une réduction des populations de Tétranyques rouges du pommier après moins de 7 jours et le nombre d’acariens est demeuré sous le seuil de production de dommages économiques pour 6 semaines.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 126 , Issue 4 , August 1994 , pp. 937 - 947
Copyright
Copyright © Entomological Society of Canada 1994

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

Forshey, C.G., Weires, R.W., and Vankirk, J.R.. 1987. Seasonal development of the leaf canopy of “Macspur McIntosh” apple trees. Horticultural Science 22: 881–883.Google Scholar
Herne, D.H.C., and Lund, C.T.. 1979. Simulation model of European red mite population dynamics developed for a mini-computer. The Canadian Entomologist 111: 499–507.Google Scholar
Hogmire, H.W., Wimmer, M.J., Crim, V.L., Welker, R.M., Wentz, E., and Smith, R.R.. 1992. Influence of tree growth on spray chemical deposits on peach leaves. Journal of Agricultural Science 118: 77–81.CrossRefGoogle Scholar
Hoy, M.A., and Ouyang, Y.. 1986. Selectivity of the acaricides clofentezine and hexythiazox to the predator Metaseiulus occidentalis. Journal of Economic Entomology 79: 1377–1380.CrossRefGoogle Scholar
Lord, F.T. 1972. Comparisons of the abundance of species composing the foliage inhabiting fauna of apple trees. The Canadian Entomologist 104: 731–749.Google Scholar
Marshall, D.B., and Pree, D.J.. 1991. Effects on miticides on the life stages of the European red mite, Panonychus ulmi (Koch) (Acari: Tetranychidae). The Canadian Entomologist 123: 77–87.Google Scholar
Ontario Ministry of Agriculture and Food. 1990. Integrated Pest Management for Apple Orchards in Ontario. Ontario Ministry of Agricultural Food Publication.Google Scholar
Pree, D.J., Marshall, D.B., and McGarvey, B.D.. 1992. Residual toxicity of dicofol, formetanate HCl, propargite, hexythiazox, and clofentezine to European red mite on peach. The Canadian Entomologist 124: 59–67.CrossRefGoogle Scholar
Pree, D.J., and Wagner, H.W.. 1987. Occurrence of cyhexatin and dicofol resistance in the European red mite, Panonychus ulmi (Koch) (Acari: Tetranychidae), in southern Ontario. The Canadian Entomologist 119: 287–290.Google Scholar
Riedl, H., Shearer, P.W., Barnett, W.W., and Hoyt, S.C.. 1988. Evaluation of clofentezine and hexythiazox on phytophagous and predatory mites on apple in Washington and Oregon. Melanderia 46: 19–28.Google Scholar
Rock, G.C. 1987. Summer evaluation of hexythiazox and clofentezine against three spider mite species in North Carolina apple orchards. Journal of Agricultural Entomology 4: 55–60.Google Scholar
SAS Institute. 1985. SAS User's Guide: Statistics, Version 5 ed. pp. 113–138. SAS Institute, Cary, NC. 129. pp.Google Scholar
SAS Institute 1986. System for Linear Models, 1986. ed. pp. 28–32. SAS Institute, Cary, NC. 210. pp.Google Scholar
SAS Institute 1990. SAS/STAT User's Guide Version 6. 4th ed. pp. 1633–1640. SAS Institute, Cary, NC. 1685. pp.Google Scholar
Sutton, T.B., and Unrath, C.R.. 1988. Evaluation of the tree–row–volume model for full season pesticide application on apples. Plant Disease 72: 629–632.Google Scholar
Taylor, C.T., and Georghiou, G.P.. 1982. Influence of pesticide persistence in calculation of resistance. Environmental Entomology 11: 746–750.Google Scholar
Thwaite, W.G. 1991. Resistance to clofentezine and hexythiazox in Panonychus ulmi from apples in Australia. Experimental and Applied Acarology 11: 73–80.CrossRefGoogle Scholar
Welty, C., Reissig, W.H., Dennehy, T.J., and Weires, R.W.. 1989. Activity of clofentezine against European red mite. Journal of Economic Entomology 82: 197–203.Google Scholar