Journal article
Pesticide Susceptibility of Two Coccinellids (Stethorus punctum picipes and Harmonia axyridis) Important in Biological Control of Mites and Aphids in Washington Hops
Biocontrol science and technology, Vol.13(2), pp.253-259
04/01/2003
Handle:
https://hdl.handle.net/2376/114386
Abstract
The susceptibility of Stethorus punctum picipes (Casey) and Harmonia axyridis Pallas larvae to pesticides used or with potential for use in Washington hops, was examined in laboratory bioassays. All pesticides tested except the miticide, hexythiazox, the insecticides, chlorpyrifos and pirimicarb, and the fungicide, mycobutanil, produced 100% mortality in S. punctum picipes at concentrations equivalent to field rates. The insecticides, pirimicarb, endosulfan, and thiamethoxam were least toxic to H. axyridis. Bifenthrin, diazinon, dimethoate, methomyl, carbaryl, malathion, phosmet, imidacloprid, and chlorpyrifos were highly toxic. The miticides, abamectin and fenpyroximate were highly toxic, milbemectin was moderately toxic but all other miticides tested were non-toxic. All fungicides had low toxicity. Selection and use of pesticides compatible with natural enemies and conservation biological control in Washington hop production is discussed.
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Details
- Title
- Pesticide Susceptibility of Two Coccinellids (Stethorus punctum picipes and Harmonia axyridis) Important in Biological Control of Mites and Aphids in Washington Hops
- Creators
- David G James - Department of Entomology , Washington State University, Irrigated Agriculture Research and Extension Center
- Publication Details
- Biocontrol science and technology, Vol.13(2), pp.253-259
- Academic Unit
- Entomology, Department of
- Publisher
- Taylor & Francis Group
- Identifiers
- 99900547583101842
- Language
- English
- Resource Type
- Journal article