The Fumigation of Insects with Hydrocyanic Acid: Effect of Different Air Pressures
- 31 May 1938
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 31 (3) , 419-426
- https://doi.org/10.1093/jee/31.3.419
Abstract
Susceptibility of several insect spp. to HCN at different air pressures was studied. Best kills of Tribolium confusum were obtained with inactive insects at 1-2 mm. air pressure; of Sitophilus oryzae, S. granarius, Laemophloeus mimitus, Lasioderma serricorne, and Oryzaephilus suri-namensis, at 30-60 mm., where the insects were active. Rhizopertha dominica, showed no difference in kill between 2 mm. and 60 mm. air pressure. The percentage kills decreased in all cases studied as the air pressure increased from 60 mm. to atmospheric pressure. The reduction in kill due to the presence of air in the fumigation chamber is due to N2 as well as to O2. Some insects seem able to prevent the penetration of HCN to some extent when they become inactive; other insects can not prevent penetration of HCN.This publication has 0 references indexed in Scilit: