Influence of Water Quality on Efficacy of Bacillus thuringiensis (Berliner) Used as Spray Fluid

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Authors

  • Department of Agricultural Entomology, Agricultural College and Research Institute, Killikulam 628 252, Tamil Nadu ,IN
  • Department of Agricultural Entomology, Agricultural College and Research Institute, Killikulam 628 252, Tamil Nadu ,IN
  • Department of Agricultural Entomology, Agricultural College and Research Institute, Killikulam 628 252, Tamil Nadu ,IN

DOI:

https://doi.org/10.18311/jbc/1997/7572

Keywords:

Bacillus thuringiensis, Bioefficacy, Helicoverpa armigera, Spodoptera litura, Water Quality.

Abstract

The influence of Electrical Conductivity (EC) - based quality of water, used as spray fluid, on the bioefficacy of commercial formulations of Bacillus thuringiensis (Berliner) (B.t.) was studied in laboratory bioassays against Spodoptera litura (Fabricius) and Helicoverpa armigera (Hiibner). EC quality did not alter the efficacy of B. t. formulations significantly. However, larval mortality decreased with increase in EC.