Two major stored products pests of maize are the Prostephanus truncatus (Horn) (larger grain borer) and Sitophilus zeamais (Motschulsky) (maize weevil). Under climate change, P. may be expected to shift its distribution northward farther into United States (US). Thus, there is a critical need develop diversified chemical control tools in post-harvest supply chain for these two species. In this ...

A new method for determination of pyrethroids, pyrethrins, and piperonyl butoxide (PBO) by high-resolution gas chromatography/high-resolution mass spectrometry (HRGC/HRMS) was developed for surface water samples. The method is based on sampling 100 L of ambient surface water with a solid phase extraction (SPE) technique that uses both wound glass fiber filters for collecting the particulate-ass...

The small hive beetle (Aethina tumida Murray) is a serious threat to beekeeping and crops that rely on honeybees for pollination. not only causes significant damage by feeding pollen honey, attacking bee brood causing stored honey ferment, but also might serve as vector of diseases. In addition, the has developed resistance pyrethroid organophosphate insecticides registered control honeybee pes...

Bed bugs, Cimex lectularius L., are one of the most difficult urban pests to control. Pest management professionals rely heavily on insecticide sprays and dusts to control bed bugs. Dust formulations are considered to provide longer residual control than sprays. However, there are no scientific data available on the comparative efficacy of the commonly used insecticide dusts. We evaluated the e...

Ultra-low-volume (ULV) aerosol applications of insecticides are used to manage high densities of adult mosquitoes. We used two-dimensional probabilistic risk assessment methodologies to evaluate three pyrethroid insecticides (phenothrin, resmethrin, and permethrin), pyrethrins, and two organophosphate insecticides (malathion and naled), applied by truck-mounted ULV sprayer. Piperonyl butoxide, ...