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Comparative Toxicity of Five Pesticides Against Tetranychus urticae (Koch),Myzus persicae (Sulzer) and Aphis nerii (Boyer de Fonscolombe)

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Last updated: 01 Jan 2025

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Abstract

Contact toxicity assay of chlorpyrifos, profenofos,deltamethrin, lambda-cyhalothrin and spinosad were
tested against three species of arthropod pests; the twospotted spider mite Tetranychus urticae, the oleander aphid Aphis nerii and the green peach aphid Myzus persicae under laboratory conditions. The biological assessment was carried out using a slide-dip technique.
The results of the acaricidal activity showed that lambdacyhalothrin and spinosad caused the highest toxicity against T. urticae with LC50 of 4.88 and 6.72 mg.L-1, respectively, followed by chlorpyrifos, deltamethrin and profenofos (LC50 = 11.44, 12.86 and 16.47 mg.L-1, respectively). Based on the toxicity index values, it is quite clear that the toxicity of lambda-cyhalothrin against T.urticae was 1.3 fold more toxic than spinosad and 2.3 and 2.6 fold more toxic than chlropyrifos and deltamethrin, respectively. The results of the aphicidal activity showed that deltamethrin has a high toxic effect against A. nerii and M. persicae with LC50 of 0.31 and 1.11 mg.L-1, respectively whereas, spinosad was the least toxic one
(LC50 = 22.13 and 30.92 mg.L-1, respectively). Based on the toxicity index, it is apparent that deltamethrin is the most potent compound against A. nerii followed by lambdacyhalothrin, chlorpyrifos, profenofos, and spinosad with toxicity index values of 100, 34.04, 3.95, 3.47 and 1.40 but followed by lambda-cyhalothrin, profenofos, chlorpyrifos and spinosad against M. persicae with toxicity index values of 100, 42.52, 27.61, 9.07 and 3.59, respectively. M. persicae was relatively more tolerant than A. nerii to profenofos,
spinosad, chlorpyrifos, lambda-cyhalothrin and deltamethrin with tolerance level of 0.45, 1.40, 1.56, 2.87
and 3.58, respectively.

DOI

10.21608/asejaiqjsae.2009.3253

Keywords

Key words: acaricidal activity, aphicidal activity, Tetranychus urticae, Aphis nerii, Myzus persicae

Authors

First Name

Entsar

Last Name

I. Rabea

MiddleName

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Affiliation

Department of Pest Control and Environmental Protection; Faculty of Agriculture, Damanhour, Alexandria University, Egypt

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Volume

30

Article Issue

JULY- SEPTEMBER

Related Issue

467

Issue Date

2009-09-01

Receive Date

2017-09-08

Publish Date

2009-09-30

Page Start

412

Page End

418

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 30_Issue JULY- SEPTEMBER_Pages 412-418.pdf

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https://asejaiqjsae.journals.ekb.eg/article_3253.html

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https://asejaiqjsae.journals.ekb.eg/service?article_code=3253

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Original Article

Type Code

53

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Publication Title

Alexandria Science Exchange Journal

Publication Link

https://asejaiqjsae.journals.ekb.eg/

MainTitle

Comparative Toxicity of Five Pesticides Against Tetranychus urticae (Koch),Myzus persicae (Sulzer) and Aphis nerii (Boyer de Fonscolombe)

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Article

Created At

22 Jan 2023