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153352

Insecticidal Effects of Two Plant Extracts of (Bidens pilosa and Rumex dentatus) and Neem Oil Against Certain Stored Grains Insects.

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Last updated: 01 Jan 2025

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Abstract

The insecticidal activities of methanolic extracts of two weedy plants leaves Bidens pilosa L. and Rumex dentatus L. at three different concentrations 3, 5 and 7% were tested against three stored grain pests, Rice weevil Sitophilus oryzae L. Saw-toothed grain beetle Oryzaephilus surinamensis L., and Bean weevil Acanthoscelides obtectus Say, compared to Neem oil as a commercial product at the same concentrations for exposure periods 24, 48, 72 and 96 hrs of treatment under laboratory conditions. Results revealed that different concentrations and exposure periods of the two extracts and Neem oil had significant lethal effects against these tested grain pests. In general, R. dentatus extract was found to be the most toxic against the tested grain pests and caused the highest mortality (100.00%) for the three pests S. oryzae, O. surinamensis and A. obtectus when applied at its highest concentration (7%) for an exposure time of 96 hrs (the highest time), followed by Neem oil 90.0±10.0, 70.00±13.3 and 90.00±2.8%, then B. pilosa extract 75.83±5.8, 79.33±5.46 and 87.50±7.2%, respectively at the same concentration and exposure time, indicating that the obtained mortality percentages were concentration and exposure time-dependent. Finally, these results demonstrate that, R. dentatus extract can be used as a promising pesticide against the three stored products insect pests investigated under this study, and strongly recommended to be used as stored grain protectants in the future.

DOI

10.21608/eajbsf.2021.153352

Keywords

Insecticidal effect, Bidens pilosa and Rumex dentatus, plants extracts, Neem oil, stored grain insect pests

Authors

First Name

Sayeda

Last Name

Ahmed

MiddleName

S.

Affiliation

Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt

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Orcid

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First Name

Sahar

Last Name

Abdel-Aziz

MiddleName

Y.

Affiliation

Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt.

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City

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Orcid

-

First Name

Ahmed,

Last Name

Taha

MiddleName

A.

Affiliation

Central Laboratory of Organic Agriculture, Agricultural Research Centre, Giza, Egypt

Email

ahmedbiofuture@gmail.com

City

-

Orcid

-

First Name

Ahmed,

Last Name

Elhefny

MiddleName

A.

Affiliation

Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt

Email

-

City

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Orcid

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Volume

13

Article Issue

1

Related Issue

20503

Issue Date

2021-06-01

Receive Date

2020-12-17

Publish Date

2021-02-20

Page Start

149

Page End

158

Print ISSN

2090-0864

Online ISSN

2090-0791

Article File

EAJBSF_Volume 13_Issue 1_Pages 149-158.pdf

PDF . 829.3kB

Link

https://eajbsf.journals.ekb.eg/article_153352.html

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https://eajbsf.journals.ekb.eg/service?article_code=153352

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Original Article

Type Code

6

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Journal

Publication Title

Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control

Publication Link

https://eajbsf.journals.ekb.eg/

MainTitle

Insecticidal Effects of Two Plant Extracts of (Bidens pilosa and Rumex dentatus) and Neem Oil Against Certain Stored Grains Insects.

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Type

Article

Created At

22 Jan 2023