Stabilization of pyrethrins for prolonged residual toxicity. I. Screening of various ingredients.

Ahmed, S. M. and Ravindranath Gupta, M. (1976) Stabilization of pyrethrins for prolonged residual toxicity. I. Screening of various ingredients. Pyrethrum Post, 13 (3). pp. 82-88.

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Abstract

Various solvents, vegetable and essential oils, antioxidants and seed extracts were tested for their independent effect in stabilising the residual toxicity of pyrethrins to adults of Tribolium castaneum (Hbst.). Of the solvents tested, trichloroethylene, kerosene, chloroform, ethylene glycol monoethyl ether, carbon tetrachloride and mineral turpentine assisted in retaining the residual toxicity. Oils such as sesame, cotton seed, castor and cashew shell enhanced the activity of pyrethrins independently. Of the antioxidants, pyrogallic acid and hydroquinone, and among the seed extracts an aqueous extract of deoiled neem (Azadirachta indica), exhibited a stabilising effect on residues of pyrethrins, causing significant knockdown and mortality of the test insects.

Item Type:	Article
Uncontrolled Keywords:	control-; insecticides-; pyrethrins-; formulations-; kerosene-; carbon-tetrachloride; turpentine-; sesame-oil; cottonseed-oil; castor-oil; hydroquinone-; pesticides-; agricultural-entomology
Subjects:	600 Technology > 03 Agriculture > 05 Insect/Pest Control
Divisions:	Food Protectants and Infestation Control
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	10 Feb 2015 12:16
Last Modified:	10 Feb 2015 12:16
URI:	http://ir.cftri.res.in/id/eprint/5474

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