Phytoparasitica (1996) 24, 231-232

Ch. Ulrichs, Ch. Reichmuth, R. Tauscher and K. Westphal (1996)
Speed of gas exchange with oxygen during treatment of compressed tobacco with nitrogen or carbon dioxide for pest control
Phytoparasitica 24 (3), 231-232
International Conference on Controlled Atmosphere and Fumigation (CAF) in Stored Products, April 21-26, 1996, Nicosia, Cyprus, lecture
Abstract: Tobacco suffers from infestation by the cigarette beetle Lasioderma serricorne and the tobacco moth Ephestia elutella. Most of the control measures tend to leave chemical residues. Nitrogen and carbon dioxide are proposed for use as disinfestants. The exposure time required for complete control depends on the time required for the gas to replace the oxygen, and in large compressed bales the inert gases must diffuse into the center of the bale, where the insects may reside. In laboratory experiments under controlled climatic and fumigation conditions, the diffusion time was determined to achieve complete exchange with air inside the tobacco bale. At room temperature, high concentrations of both gases were reached in the center within ca 6 h, with a corresponding decrease in the oxygen content.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Christian Ulrichs

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lasioderma serricorne	Stored tobacco
	Ephestia elutella	Stored tobacco