H. B. Gillenwater, P. Harein, E. Loy
Jun 1, 1971
Citations
0
Influential Citations
10
Citations
Journal
Journal of Stored Products Research
Abstract
Abstract Field studies were conducted to determine the residues deposited on various packaged commodities exposed to weekly applications of dichlorvos, and to determine the effectiveness of these applications against adults of Tribolium confusum duVal and larvae of Attagenus megatoma (F.). A machine especially designed for dispensing dichlorvos as vapor into large storage areas was used to make the applications. Concentrations of dichlorvos vapor and its distribution were determined by chemical analysis of air samples. The test was continued for 21 weeks. Uniform concentrations and distribution of dichlorvos were provided with the vapor dispenser. The rapid decrease in dichlorvos in the air soon resulted in a concentration below 1 μg/l., the tolerance established for humans by the American Conference of Governmental Industrial Hygienists. Results of the bioassay and residue analysis indicated that dichlorvos vapor is a safe, effective, space treatment for use in food storage areas to protect a variety of non-perishable, packaged commodities against insects.