Evaluating bio-safety of newer and conventional insecticides against parasitoids and predators of castor whitefly


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Evaluating bio-safety of newer and conventional insecticides against parasitoids and predators of castor whitefly

Authors

  • M SENTHIL KUMAR Forest College and Research Institute, Tamil Nadu Agricultural University, Mettupalayam-641 301, Tamil Nadu
  • M DEIVAMANI Forest College and Research Institute, Tamil Nadu Agricultural University, Mettupalayam-641 301, Tamil Nadu
  • S R VENKATACHALAM Forest College and Research Institute, Tamil Nadu Agricultural University, Mettupalayam-641 301, Tamil Nadu

https://doi.org/10.56739/jor.v37iSpecialissue.141191

Keywords:

Bio-safety, Castor, Insecticides. Parasitoids, Predators, Whitefly

Abstract

This investigation was carried out to evaluate the bio-safety of newer and conventional insecticides tested against Eretmocerus mundus, Nephus regularis, Chilocorus nigirita under laboratory conditions at Tapioca and Castor Research Station, Yethapur. The results showed that diafenthiuron 50 WP @ 0.8g/l and buprofezin 25 SC @ 0.8 ml/l recorded lowest adult mortality of Eretmocerus mundus (60 and 65 percent), Nephus regularis (40.60 and 39.40 per cent) and Chilocorus nigirita (39.20 and 34.60 per cent) respectively and highest adult emergence (74.41 and 73.49 percent) in Eretmocerus mundus. However, thiomethaxam 25 WG0.4 g/l and dimethoate 30 EC1.7 ml/l were very harmful to parasitoid and predators.

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References

Desneux N, Denoyelle R and Kaiser L 2006. Amulti-step bioassay to assess the effect of the deltamethrin on the parasitic wasp Aphidius ervi. Chemosphere, 65: 1697-1706.

Nasreen A, Ashfaq M and Mustafa G 2000 Intrinsic toxicity of some insecticides to egg parasitoid, Trichogramma chilonis (Hymenoptera: Trichogrammatidae). Bulletin of the Institute of Tropical Agriculture Kyushu University, 23: 41-

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Submitted

2023-08-21

Published

2020-03-12

How to Cite

M SENTHIL KUMAR, M DEIVAMANI, & S R VENKATACHALAM. (2020). Evaluating bio-safety of newer and conventional insecticides against parasitoids and predators of castor whitefly: Evaluating bio-safety of newer and conventional insecticides against parasitoids and predators of castor whitefly. Journal of Oilseeds Research, 37(Specialissue). https://doi.org/10.56739/jor.v37iSpecialissue.141191