J. Agric. Entomol. 9(4);273-281 (October 1992) ABSTRACT A portable automatic sprayer, actuated when cattle obtain mineral, was tested against face fiies and pyrethroid·resistanL horn nics using 0.5% Al dichlorvos in a waler spray mixture. Horn ny populations were initially 48-fold resistant to pCt-methrin with no '"esistancc to diazinon. Horn Oy control averaged 90.3 to 99.1% reduction. Resista...

Subacute experiments were carried out on rabbits by daily oral administration of Lindane, Malathion and Dichlorophos. A dose-dependent significant decrease in Salmonella typhi induced immune response was found in sera of animals treated with these pesticides compared to untreated controls. Inihbition of cholinesterase activity confirmed the immunological findings.

Ethyl formate applied as an aerosol killed almost 100% of the mould mites (Tyrophagus putrescentiae) present in tissue culture tubs. Mite mortality showed dose responses to the chemical and mortality increased with duration of exposure. Other aerosol formulations, and vacuum and controlled atmosphere treatments were also tested but were not effective in controlling mites. Onion thrips (Thrips t...