Phosphine resistance in the cigarette beetle Lasioderma serricorne (Coleoptera: Anobiidae) and overcoming control failures during fumigation of stored tobacco.

Rajendran, S. and Narasimhan, K. S. (1994) Phosphine resistance in the cigarette beetle Lasioderma serricorne (Coleoptera: Anobiidae) and overcoming control failures during fumigation of stored tobacco. International Journal of Pest Management, 40 (2). 207-210; 21 ref..

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Abstract

Survival of the life stages of Lasioderma serricorne was recorded in tobacco bales that were fumigated under a gas-proof cover with phosphine at a rate of 1-1.25 g/m3 for 7 or 8 days with the terminal concn at _ 0.1 g/m3 in warehouses at Ongole, Andhra Pradesh, India. Screening tests at the discriminating concn of 0.07 g/m3 with a 24-h exposure period confirmed the occurrence of phosphine-resistant strains in the premises. Repeated phosphine treatments under leaky situations, especially with tarpaulins of poor gas retention, resulted in a high level of resistance. Field trials proved that a dosage of 2 g/m3 with 10 days' exposure and a terminal concn exceeding 0.5 g/m3 was effective against all stages of the phosphine-resistant strains. During fumigation of tobacco packed in gunny bales with wooden bale boards, phosphine concn between the freespace in the stack and inside the bales equilibrated in 24 h, whilst it took more than 120 h for equilibration of the gas between the freespace and tobacco packed in corrugated fibreboard cartons with internal polythene liners of 0.1 mm thickness. PVC fumigation sheets of 0.15 mm thickness were better at retaining the phosphine fumigant than the polyethylene sheets which are currently used.

Item Type:	Article
Uncontrolled Keywords:	fumigation-; fumigants-; insect-pests; stored-products-pests; control-; chemical-control; tobacco-; commodities-; phosphine-; resistance-; insecticides-; insecticide-resistance; stored-products; pest-control; agricultural-entomology
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 26 Pesticide Chemistry
Divisions:	Food Protectants and Infestation Control
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	27 Aug 2018 09:13
Last Modified:	27 Aug 2018 09:13
URI:	http://ir.cftri.res.in/id/eprint/8335

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