Evaluation Of Three Botanicals And A Synthetic Insecticide (Permethrin,) For The Control. Of Maize Weevil. Sitophilus Zeamais (Mot.)
ABSTRACT
The pulverized seeds of three 3) indigenous plants, namely: Jatropha curcas,
Thevetia peruviana and Piper guineense as well as permethrin (coopex grain dust) a
synthetic insecticide were evalu- td under laboratory conditions for their relative
toxicities to Maize weevil Sitophilus zeamais (Mot.). Maize grains weighing 50g were
treated with the plant powder and the synthetic insecticide at the rates of 0.5g, 2.5g,
and 5.Og by weight of the plant powder and then infested with 10 adult weevils. The
comparative effectiveness of each of the plant powder and permethrin (coopex grian
dust) were assessed ' counting weevils mortality at 24 hours, 7 days, 14 days, 21
days and 28 days post reatmerL.
The weevil perforation index (W P I ) was assessed at 60 days post treatment. The
result were subjected to staUstic analysis after transforming the data using square
root method and the ANOVA - c te significant means were separated using the
DNMRT. The permethrin, a synhtic insecticides (coopex grain dust) proved to be
very effective (toxic) among al! the treatments. Among the botanicals, Piper guineense
was the most effective, followed h Thevetia and Jatropha curcas.
Based on the weevil perforation index (W P I ), all the treatments showed positive
protectant effect except the Jatroria curcus at 0.5g by weight of the plant powder
which showed negativt otecta'it effect. The botanicals with positive protectant
effects have potentials as seec rrctant against Sitophilus zeamais (Mot.).
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MMFCWA, C (2021). Evaluation Of Three Botanicals And A Synthetic Insecticide (Permethrin,) For The Control. Of Maize Weevil. Sitophilus Zeamais (Mot.). Repository.mouau.edu.ng: Retrieved May 18, 2024, from https://repository.mouau.edu.ng/work/view/evaluation-of-three-botanicals-and-a-synthetic-insecticide-permethrin-for-the-control-of-maize-weevil-sitophilus-zeamais-mot-7-2
C., MMFCWA. "Evaluation Of Three Botanicals And A Synthetic Insecticide (Permethrin,) For The Control. Of Maize Weevil. Sitophilus Zeamais (Mot.)" Repository.mouau.edu.ng. Repository.mouau.edu.ng, 07 Jun. 2021, https://repository.mouau.edu.ng/work/view/evaluation-of-three-botanicals-and-a-synthetic-insecticide-permethrin-for-the-control-of-maize-weevil-sitophilus-zeamais-mot-7-2. Accessed 18 May. 2024.
C., MMFCWA. "Evaluation Of Three Botanicals And A Synthetic Insecticide (Permethrin,) For The Control. Of Maize Weevil. Sitophilus Zeamais (Mot.)". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 07 Jun. 2021. Web. 18 May. 2024. < https://repository.mouau.edu.ng/work/view/evaluation-of-three-botanicals-and-a-synthetic-insecticide-permethrin-for-the-control-of-maize-weevil-sitophilus-zeamais-mot-7-2 >.
C., MMFCWA. "Evaluation Of Three Botanicals And A Synthetic Insecticide (Permethrin,) For The Control. Of Maize Weevil. Sitophilus Zeamais (Mot.)" Repository.mouau.edu.ng (2021). Accessed 18 May. 2024. https://repository.mouau.edu.ng/work/view/evaluation-of-three-botanicals-and-a-synthetic-insecticide-permethrin-for-the-control-of-maize-weevil-sitophilus-zeamais-mot-7-2