Evaluation of Colloidal Chitosan Against Diamond Back Moth Plutella xylostella L. on Cauliflower


  • S. Selva Rani Department of Agricultural Entomology, Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai 625104, Tamil Nadu
  • M. Shanthi Department of Agricultural Entomology, Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai 625104, Tamil Nadu
  • M. Murugan Department of Agricultural Entomology, TNAU, Coimbatore 641003, Tamil Nadu
  • K. Senthil Department of Soils and Environment, Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai 625104, Tamil Nadu
  • S. Vellaikumar Department of Biotechnology, Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai 625104, Tamil Nadu
  • S. Haripriya Department of Nanoscience and Technology, TNAU, Coimbatore 641003, Tamil Nadu




Plutella xylostella, cauliflower, chitosan, synthesis, colloidal chitosan, glacial acetic acid, chronic toxicity, growth inhibition, malformation, larval period, larval weight


An ecofriendly colloidal chitosan byproduct synthesized from crude chitosan was evaluated for its chronic toxicity against second instar larvae of Plutella xylostella L. by leaf dip bioassay. The consumption of 10000 ppm colloidal chitosan treated leaf caused 100% mortality after the 4th day, with least larval weight (0.02 mg). Whereas, the consumption of 8000 ppm treated leaves reduced the larval (0.65 mg), pupal (1.26 mg), and adult weights (0.75 mg), with 10% adult malformation and extended larval duration. This is compared to untreated larval duration of 10.66 days. Thus, colloidal chitosan exhibits chronic toxicity and growth inhibition effect on P. xylostella larvae.


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How to Cite

Selva Rani, S., Shanthi, M., Murugan, M., Senthil, K., Vellaikumar, S., & Haripriya, S. (2022). Evaluation of Colloidal Chitosan Against Diamond Back Moth <i>Plutella xylostella</i> L. on Cauliflower. Indian Journal of Entomology, 85(1), 253–256. https://doi.org/10.55446/IJE.2021.368



Research Communications


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