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4830

Botanical oils as eco-friendly alternatives for controlling the rice weevil Sitophilus oryzae

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Last updated: 01 Jan 2025

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Plant pest management

Abstract

The rice weevil Sitophilus oryzae is a major stored grain pest infesting many grains in storage mainly wheat, rice and maize. Toxic effects of certain extracted botanical essential oils (EOs) were evaluated against the adults of Sitophilus oryzae (Linnaeus) (Coleoptera: Curculionidae). Bioassays were carried out by fumigation and guide tables were presented to show the effective range of concentrations of each of the evaluated essential oils and their corresponding mean number of responded insects.  The essential oil of fennel (seeds) (Foeniculum vulgare) did not show any toxic effect up to the concentration of 300 µl/370 ml air and Common Sage (Marmaria leaves) (Salvia officinalis)up to 250 µl/370 ml air during the first 48 hrs then they showed a very weak effect. The essential oil of spearmintleaves(Mentha spicata L.) was the utmost toxic and had a lowest LC50s calculated by 4.43, 3.88 and 3.27 µl/370 ml air after different exposure periods of 24, 48 and 72 hrs, respectively, followed by the essential oil of clove(Syzygium aromaticum) (382.62, 79.95 and 9.23 µl/370 ml air, in respect). In this concern, clove showed its higher toxicity after 72 hrs. The mortality of the exposed adults to EOs increased with the increase of concentrations and time of exposure to each one. The calculated values of toxicity index showed that the essential oil of mint was the most toxic EO (100%) followed by clove (35.43%). Moreover, log (dose)/N.E.D. (response) (Ld-p) regression lines for certain bio assayed botanical essential oils against S. oryzae were also illustrated. Therefore, it could be recommended that the essential oils of spearmint leavesand clove buds could be used to control the rice weevil, S. oryzae.
 

DOI

10.21608/asejaiqjsae.2017.4830

Keywords

botanical oils, Sitophilus oryzae, Guide tables, LC50, Toxicity index, Ld-p lines

Authors

First Name

Saad, A. S.

Last Name

A.

MiddleName

-

Affiliation

Plant Protection Dept., Faculty of Agriculture (Saba Basha), Alex. Univ., Egypt

Email

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City

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Orcid

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First Name

Elsayed H. M.

Last Name

Tayeb

MiddleName

-

Affiliation

Plant Protection Dept., Faculty of Agriculture (Saba Basha), Alex. Univ., Egypt

Email

-

City

-

Orcid

-

First Name

Houria L.

Last Name

Metraw

MiddleName

-

Affiliation

Plant Protection Dept., Faculty of Agriculture (Saba Basha), Alex. Univ., Egypt

Email

-

City

-

Orcid

-

Volume

38

Article Issue

October-December

Related Issue

694

Issue Date

2017-10-01

Receive Date

2017-12-06

Publish Date

2017-12-31

Page Start

921

Page End

932

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 38_Issue October-December_Pages 921-932.pdf

PDF . 565.0kB

Link

https://asejaiqjsae.journals.ekb.eg/article_4830.html

Detail API

https://asejaiqjsae.journals.ekb.eg/service?article_code=4830

Order

27

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

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

MainTitle

Botanical oils as eco-friendly alternatives for controlling the rice weevil Sitophilus oryzae

Details

Type

Article

Created At

22 Jan 2023