scholarly journals Characterization of Ocimum basilicum synthesized silver nanoparticles and its relative toxicity to some insecticides against tobacco cutworm, Spodoptera litura Feb. (Lepidoptera; Noctuidae)

2021 ◽  
Vol 218 ◽  
pp. 112278
Author(s):  
Muhammad Jafir ◽  
Jam Nazeer Ahmad ◽  
Muhammad Jalal Arif ◽  
Safdar Ali ◽  
Samina Jam Nazeer Ahmad
Keyword(s):  
Silver Nanoparticles ◽  
Spodoptera Litura ◽  
Ocimum Basilicum ◽  
Relative Toxicity ◽  
Tobacco Cutworm ◽  
Lepidoptera Noctuidae

Biological Characterization of a Nucleopolyhedrovirus of Spodoptera litura (Lepidoptera: Noctuidae) Isolated from the Philippines

2001 ◽  
Vol 20 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Barbara A Laviña ◽  
Leodegario E Padua ◽  
Fu Quan Wu ◽  
Noriko Shirata ◽  
Motoko Ikeda ◽  
...  
Keyword(s):  
Spodoptera Litura ◽  
The Philippines ◽  
Biological Characterization ◽  
Lepidoptera Noctuidae

scholarly journals Toxicity of isolated phenolic compounds from Acorus calamus L. to control Spodoptera litura (Lepidoptera: Noctuidae) under laboratory conditions

2022 ◽  
Vol 9 (1) ◽  
Author(s):  
Phatcharaphon Wiwattanawanichakun ◽  
Siriwan Saehlee ◽  
Thitaree Yooboon ◽  
Nutchaya Kumrungsee ◽  
Saksit Nobsathian ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Crude Extract ◽  
Spodoptera Litura ◽  
Acorus Calamus ◽  
Botanical Pesticides ◽  
Laboratory Conditions ◽  
Tobacco Cutworm ◽  
Insecticidal Efficacy ◽  
Chemical Pesticides ◽  
Lepidoptera Noctuidae

Abstract Background Spodoptera litura (Lepidoptera: Noctuidae), the tobacco cutworm, is an prominent agricultural pest. To reduce the use of chemical pesticides that cause health problems and that leave residue in the environment, some botanical pesticides have been developed. Our research aimed to evaluate the insecticidal efficacy of Acorus calamus L. extract for the control of S. litura under laboratory conditions. Results After 24 h of topical application, the A. calamus methanolic crude extract showed toxicity against secondary instar S. litura larvae (LD50 ~ 7.438 µg/larva). Chrysin (5,7-dihydroxy flavone), one of the isolated phenolic compounds, showed optimal control efficiency (LD50 ~ 2.752 µg/larva) and showed a reduction in carboxylesterase activities, which have detoxification reduction roles in larvae. Conclusion Chrysin in the crude extract of A. calamus may be an active compound to control this pest, and it may be applied as an alternative to minimize the usage of chemical insecticides. Graphical Abstract

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