Efficacy of insecticides against tuber flea beetles, wireworms and aphids in potatoes

Authors

  • D. G. Finlayson Research Station Agriculture Canada Vancouver, B.C.
  • A. T. S. Wilkinson Research Station Agriculture Canada Vancouver, B.C.
  • J. R. Mackenzie Research Station Agriculture Canada Vancouver, B.C.

Keywords:

potato, wireworm, <i>Agriotes obscurus</i>, tuber flea beetle, <i>Epitrix tuberis</i>, green peach aphid, <i>Myzus persicae</i>

Abstract

Soil-incorporated and foliar-applied insecticides, alone and in combination, were tested in silt loam to control tuber flea beetle, <i>Epitrix tuberis </i>Gent., the green peach aphid, <i>Myzus persicae</i> (Sulz.) and the wireworm <i>Agriotes obscurus </i>(L.) Most soil-incorporated band treatments did not give adequate protection from tuber flea beetles. However, supplemental foliar applications, July 15 and 30 and August 15, reduced the percentage unmarketable tubers to 13% under a heavy infestation in 1977 and to 0% in a lighter infestation in 1978. Fonofos, broadcast and soil-incorporated, gave the best control of wireworms and of a light infestation of tuber flea beetles. Methamidophos was the best aphicide

References

Campbell, C.J. and D.G. Finlayson. 1976. Comparative efficacy of insecticides against tuber flea beetle and aphids in potatoes in British Columbia. Can. J. Plant Sci. 56:869-875.

Duncan, D.B. 1955. Multiple range and multiple tests. Biometrics, 11:1-42.

Finlayson, D.G., M.J. Brown, C.J. Campbell, A.T.S. Wilkinson, and I.H. Williams. 1972. Insecticides against tuber flea beetle on potatoes in British Columbia (Chrysomelidae: Coleoptera). J. Entomol. Soc. Brit. Columbia 69:9-13.

Wilkinson, A.T.S., D.G. Finlayson, and C.J. Campbell. 1977. Soil incorporation of insecticides for control of wireworms in potato land in British Columbia. J. Econ. Entomol. 70:755-758.

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Published

2019-09-06

Issue

Vol. 76 (1979): Journal of the Entomological Society of British Columbia

Section

Articles

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