Selectivity of Five Insecticides for Codling Moth 1 Control: Effects on the Twospotted Spider Mite 2 and Its Predators
| Autor: | Jill Kaldor, Colin C. Bower |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Ecology
biology Acaricide Codling moth Chlordimeform biology.organism_classification humanities Toxicology chemistry.chemical_compound Diflubenzuron Agronomy chemistry Spider mite Insect Science parasitic diseases medicine Leptophos Tetranychus urticae Ecology Evolution Behavior and Systematics Permethrin medicine.drug |
| Zdroj: | Environmental Entomology. 9:128-132 |
| ISSN: | 1938-2936 0046-225X |
| DOI: | 10.1093/ee/9.1.128 |
| Popis: | Five insecticides were tested against Laspeyresia pomonella (L.), and their effects on Tetranychus urticae (Koch) and its predators were determined. The broadspectrum insecticides permethrin (0.013%), azinphos-methyl (0.05%) and leptophos (0.045%) gave equal control of L. pomonella under a 3-weekly programme of 7 sprays. Poorer control was given by the selective chemicals chlordimeform (0.05%) and diflubenzuron (0.05%). Both chlordimeform and permethrin suppressed T. urticae populations. No predators of mites were found on pennethrin treated trees and very few were found on trees sprayed with the organophosphates. Chlordimeform appeared relatively harmless to all stages of Stethorus spp. and diflubenzuron appeared harmless to Stethorus adults, but was toxic to the eggs. Small numbers of predatory mites of 3 species were recovered from diflubenzuron treated trees towards the end of the season. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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