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332753

Efficacy of Certain Neonicotinoids Against Cotton Whitefly, Bemisia tabaci and Their Residues in Fruits and Leaves of Tomato Plants under Open Field Conditions

Article

Last updated: 01 Jan 2025

OverviewSimilar Items

Subjects

-

Tags

Plant pest management

Abstract

Globally, neonicotinoids constitute a class of systemic insecticides that has become the most widely utilized group of insecticides. The efficiency of three neonicotinoid insecticides i.e. imidacloprid, thiamethoxam and dinotefuran at recommended dose were studied against the cotton whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) on tomato plants under the open field conditions. The results showed that imidacloprid was the most efficient insecticide against the nymphs of B. tabaci followed by thiamethoxam and dinotefuran. The general means of reduction percentages of B. tabaci nymphs were 85.75, 83.24 and 75.11% after the 1st spray and 87.53, 85.03 and 73.96% after the 2nd spray for imidacloprid, thiamethoxam and dinotefuran, respectively. Residues of the tested pesticides in/on tomato fruits and leaves were determined using a QuEChERS method. Initial amount of the three insecticides were higher in tomato leaves compared with fruits. The half-life values (t½) for the three insecticides in tomato fruits were 2.71, 2.95 and 1.87 days for imidacloprid, thiamethoxam and dinotefuran, respectively. While these values in tomato leaves were 2.91, 3.322 and 2.108 days for imidacloprid, thiamethoxam and dinotefuran, respectively. The levels of residues were above the maximum residue limits (MRLs) up to 3, 6 and 6 days after spray (DAS) for imidacloprid, thiamethoxam and dinotefuran, respectively in tomato fruits. The determined PHI for imidacloprid, thiamethoxam and dinotefuran were 6, 9 and 9 DAS, respectively. Washing of treated tomato fruits with tap water, 10% sodium bicarbonate, and 10% vinegar for 15 min were reported to be highly effective in reducing the level of the three insecticides. The residues of the three insecticides in tomato fruits pose low health risks to consumers.

DOI

10.21608/asejaiqjsae.2024.332753

Keywords

Neonicotinoids, cotton whitefly, toxicity, residues, QuEChERS

Authors

First Name

Mohamed

Last Name

Atia

MiddleName

Ragab Mabrouk

Affiliation

Plant Protection Department, Faculty of Agriculture, Damanhour University, Egypt

Email

mabroukmohamed802@gmail.com

City

-

Orcid

-

First Name

Adnan

Last Name

Darwish

MiddleName

Abdel-Fattah

Affiliation

plant protection department, faculty of agriculture, Damanhour University

Email

adnandarwish2012@yahoo.com

City

-

Orcid

-

First Name

Awatef

Last Name

Mansy

MiddleName

Saad Mohamed

Affiliation

Plant protection department, Faculty of Agriculture, Damanhour University, Egypt

Email

awatefmansy@yahoo.com

City

Elmahmoudia- Behira

Orcid

-

Volume

45

Article Issue

1

Related Issue

45054

Issue Date

2024-03-01

Receive Date

2023-12-20

Publish Date

2024-03-01

Page Start

1

Page End

10

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 45_Issue 1_Pages 1-10.pdf

PDF . 329.8kB

Link

https://asejaiqjsae.journals.ekb.eg/article_332753.html

Detail API

https://asejaiqjsae.journals.ekb.eg/service?article_code=332753

Order

1

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

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

MainTitle

Efficacy of Certain Neonicotinoids Against Cotton Whitefly, Bemisia tabaci and Their Residues in Fruits and Leaves of Tomato Plants under Open Field Conditions

Details

Type

Article

Created At

23 Dec 2024