Control of Stored Tobacco Pests by A -948 Fumigant

The assay included the release of the active ingredient(a.i), change of the a.i concentration in a fumigating space and its toxicity to the stored tobacco insects in laborotory and warehouse.The results show ed that a.i completly released in 7d. The highest a.i concentration appeared at 4d after initiation of the fumigation. The control effects reached 100% with A-948 a.i dosage 1~1.2g/m³ within 7d.