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VOL. 10, ISSUE 10 (2025)
Determination of toxicity (LD50) value of phytopesticide Azadirachta indica on the adult male insect Odontopus varicornis (Heteroptera: Pyrrhocoridae)
Authors
Navamani A, Rajathi V
Abstract
Azadirachta indica
often known as neem, structural modifications both naturally and through
chemical process. specifically, azadirachtin and other bioactive compounds
extracted from Azadirachta indica represent a valuable source of
phytopesticides. These plant-based pesticides function as antifeedants,
disrupting insect growth and reproduction, and repelling pests. Among these,
phytopesticide play a crucial role as agents for insect control. Plant-based
products have long been utilized for the control of domestic pests. The global
search for natural, eco-friendly insecticidal substances continues to gain
momentum. In this context, the present study was undertaken to determine the median lethal dose (LD50) of Azadirachta indica
against the test insect Odontopus Varicornis. Changes in the mortality
of Odontopus Varicornis were observed at different exposure periods of
12, 24, 48, 72, and 96 hours. The median lethal dose
was determined to be approximately 0.05 ppm at 48 hours, which resulted in 50%
mortality of the test insects.
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Pages:136-139
How to cite this article:
Navamani A, Rajathi V "Determination of toxicity (LD50) value of phytopesticide <i>Azadirachta</i><i> indica</i> on the adult male insect <i>Odontopus varicornis</i> (<i>Heteroptera: Pyrrhocoridae</i>)". International Journal of Entomology Research, Vol 10, Issue 10, 2025, Pages 136-139
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