Insecticidal Potentials and Identification of Bioactive Compounds from Extracts of Bacopa Floribunda and Ludwigia Decurrens Plants

Adewole E., Ogola-Emma E., David P., Peters O., Oludoro O., Adewumi F., Agboola K. and Adejori A.
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Adewole E.: Department of Chemical Sciences, Industrial Chemistry Programme, Afe Babalola University Ado-Ekiti, Nigeria
Ogola-Emma E.: Department of Chemistry, Bayelsa Medical University, Bayelsa state, Nigeria
David P.: Department of Chemical Sciences, Industrial Chemistry Programme, Afe Babalola University Ado-Ekiti, Nigeria
Peters O.: Department of Chemical Sciences, Industrial Chemistry Programme, Afe Babalola University Ado-Ekiti, Nigeria
Oludoro O.: Department of Chemical Sciences, Industrial Chemistry Programme, Afe Babalola University Ado-Ekiti, Nigeria
Adewumi F.: Department of Chemical Sciences, Industrial Chemistry Programme, Afe Babalola University Ado-Ekiti, Nigeria
Agboola K.: Department of Chemical Sciences, Biochemistry Programme, Afe Babalola University Ado-Ekiti, Nigeria
Adejori A.: Department of Chemical Sciences, Biochemistry Programme, Afe Babalola University Ado-Ekiti, Nigeria

Journal of Agriculture and Crops, 2022, vol. 8, issue 4, 345-351

Abstract: The negative impact of insecticides used to combat insect-borne plant ailments cannot be emphasized, as they have had a major influence on plant yields throughout time, and the side effect of insecticide residue on consumers cannot be overstated either. Callosobrochus maculatus is an insect that attacks cowpeas and has the potential to significantly reduce crop productivity. This research developed from investigations into the utilization of biological control technologies that have little or no harmful influence on humans or the environment. The leaves of Bacopa Floribunda (BFL) and Ludwigia Decurrens (LDL) were air dried, powdered, and extracted with n-hexane. The insecticidal activities were carried out according to protocol, and the LC50 was determined using online software from AAT Bioquest, Inc. The presence of bioactive compounds was detected using GC-MS. The Callosobrochus maculatus mortality rate was found to be a function of exposure time and concentration of the extracts, with the maximum mortality rate (66.67±8.82 percent) occurring after 72 hours at 0.5 mg/ml for BFL extract. The highest mortality rate (70.00 ±5.77 percent) was obtained for the LDL extract at 72 hours at 0.5 mg/ml of the extract concentration, which was better than the other extract (BFL) at 0.5 mg/ml. The lethal concentration LC50 for BFL varies from 0.251 (24 hours), 0.276 (48 hours), and 0.223 (72 hours), while the LC50 for LDL extract is 0.228 (24 hours), 0.039 (48 hours), and 0.663 (72 hours) (72 hrs). The presence of chemicals found could be linked to the extracts’ insecticidal properties. The excellent potential of the extracts as insect biocontrol agents against Callosobrochus maculatus can be recommended for future research as insect biocontrol agents.

Keywords: Callosobrochus maculatus; Bacopa floribunda; Ludwigia decurrens; Concentration; Insecticidal; LC50, Mortality; GCMS. (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:arp:jacarp:2022:p:345-351

DOI: 10.32861/jac.84.345.351

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