Toxicological and biological effects of some insecticides on the cotton leafworm, Spodoptra littorallis (boisd. )
Other Title(s)
التأثيراث التوكسيكولوجيت و البيولوجيت لبعض المبيدات الحشرية على دودة ورق القطة
Joint Authors
Ayyub, Ali Ahmad Ali
al-Sabki, Ahmad al-Sayyid Ahmad
Hindawi, Muhammad Abd al-Al
Awwad, Nurhan Zaydan
Source
Zagazig Journal for Agricultural Researches
Issue
Vol. 46, Issue 4 (31 Aug. 2019), pp.1021-1028, 8 p.
Publisher
Zagazig University Faculty of Agriculture
Publication Date
2019-08-31
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Topics
Abstract EN
Toxicity of five insecticides belonging to different groups of chemicals, namely: chlorpyrifos, methomyl, emamectin benzoate, protecto and biovar to cotton leafworm were evaluated under the field and laboratory conditions.
The effect of the tested chemicals on some biological aspects of 2nd and 4th instar larvae of the cotton leafworm, Spodoptra littoralis (Boisd.
) were investigated.
The lethal concentrate (LC50 and LC90) values were calculated after 24, 48, and 72 hr.
, post-treatment.
The obtained results showed that there was a wide range of toxicity of the tested pesticides; however the insecticide bestban showed to be the highest toxic compound effect against 2nd and 4th instar larvae, with LC50 and LC90 values after 72 hr.
, post-treatment recording 0.05, 0.22 mg/l and 0.15, 1.10 mg/l for 2nd and 4th instar larvae, respectively.
On the other hand, the biopesticide biovar exhibited the lowest toxicity to the tested larvae at both levels of toxicity (LC50; LC90 values after 72 hr.
, recording 414; 856 mg/l and 1100; 1740 mg/l) for 2nd and 4th instar larvae, respectively.
The other tested insecticides occupied an intermediate position between the highest and the lowest toxic pesticides.
Regarding the biological effects, results showed that, the tested insecticides induced a clear reduction in mean larval weight and mean pupal weight compared with the control.
The tested insecticides affected the larval duration, pupal duration, pupation, adult emergence and adult longevity.
American Psychological Association (APA)
Awwad, Nurhan Zaydan& Ayyub, Ali Ahmad Ali& al-Sabki, Ahmad al-Sayyid Ahmad& Hindawi, Muhammad Abd al-Al. 2019. Toxicological and biological effects of some insecticides on the cotton leafworm, Spodoptra littorallis (boisd. ). Zagazig Journal for Agricultural Researches،Vol. 46, no. 4, pp.1021-1028.
https://search.emarefa.net/detail/BIM-1023702
Modern Language Association (MLA)
Awwad, Nurhan Zaydan…[et al.]. Toxicological and biological effects of some insecticides on the cotton leafworm, Spodoptra littorallis (boisd. ). Zagazig Journal for Agricultural Researches Vol. 46, no. 4 (2019), pp.1021-1028.
https://search.emarefa.net/detail/BIM-1023702
American Medical Association (AMA)
Awwad, Nurhan Zaydan& Ayyub, Ali Ahmad Ali& al-Sabki, Ahmad al-Sayyid Ahmad& Hindawi, Muhammad Abd al-Al. Toxicological and biological effects of some insecticides on the cotton leafworm, Spodoptra littorallis (boisd. ). Zagazig Journal for Agricultural Researches. 2019. Vol. 46, no. 4, pp.1021-1028.
https://search.emarefa.net/detail/BIM-1023702
Data Type
Journal Articles
Language
English
Notes
-
Record ID
BIM-1023702