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Influence of post‐treatment temperature, solvents and emulsifiers on the toxicity of cypermethrin to larvae of Spodoptera litura (Fab.)
Author(s) -
JAGLAN R S,
SIRCAR P.
Publication year - 1996
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1996.tb05772.x
Subject(s) - spodoptera litura , cypermethrin , toxicity , biology , toxicology , toluene , larva , xylene , chromatography , food science , pesticide , chemistry , botany , organic chemistry , agronomy
Summary. Larvae of the tobacco caterpillar, Spodoptera litura (Fab.) were topically bioassayed with cypermethrin emulsion formulation and proprietary EC in combination with different solvents and emulsifiers for their toxicity at 16 ± 2°C and 27 ± 1°C. Among different solvents, the descending order of efficacy (with relative toxicity in parenthesis) against 9 ± 1 day old larvae of S. litura (Fab.) at 16 ± 2°C than 27 ± 1°C was: xylene (7.41), aromex (5.54), cyclohexane (4.93), C‐IX (3.93), benzene (2.40) and toluene (2.26). With emulsifier, the order was: Triton X‐100 (7.41), SN 4 S (4.60), Teepol (2.90), Tween‐80 (1.49), Swascofix DP‐50 (1.28), SN 4 R (1.10) and S 52 B (1.07). However, the proprietary cypermethrin EC was 2.31 times more toxic at 16 ± 2°C than at 27 ± 1°C.