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VOL. 6, ISSUE 5 (2021)
Toxicological potential of four plant extracts impregnated on packaging materials against red flour beetle
Authors
Meethu Subrahmaniyan, Irengbam Barun Mangang, Loganathan Manickam
Abstract
The red flour beetle is an important secondary insect and cause severe damage to the food commodities. The use of chemical insecticides in the grain storage facilities leads to problems of resistant development in insect, residues and pollution in the environment. The present study was conducted as an alternative to chemical insecticides, to evaluate the toxicity of packaging materials treated with different medicinal plant extracts against the red flour beetle Tribolium castaneum. The experiments were carried out to evaluate the toxicity of leaf extracts of four medicinal plants Kuppaimeni, neem, tulsi and thyme against red flour beetle, T. castaneum. All the aqueous extracts of medicinal plants had effects on mortality to T. castaneum adults. It was observed that the effect on mortality increased with increased in the concentration of the plant extracts. The results showed that extracts of all the four plants had direct toxic effect on red flour beetle. The jute bags treated with thyme extracts showed lower lethal time (LT99 of 113.48 and 99.27min), whereas tulsi leaf extract possessed the lowest toxic effect (LT50 of 31.00 and 29.67 min). The effect of cloth bags treated with thyme extracts (8%) depicts the lowest LT50 and LT99 of 31.01 and 113.65 min and neem extract also showed similar effect at 10% concentration. Stigmasterol was the most active component obtained in the GCMS analysis of thyme extracts. These results revealed that packaging materials treated with medicinal plant extracts can be used to manage red flour beetle.
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Pages:202-206
How to cite this article:
Meethu Subrahmaniyan, Irengbam Barun Mangang, Loganathan Manickam "Toxicological potential of four plant extracts impregnated on packaging materials against red flour beetle ". International Journal of Entomology Research, Vol 6, Issue 5, 2021, Pages 202-206
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