0 a chemical used for killing insects and small animals that damage crops: --
organophosphate pesticides/poisoning
Of those sheep dipped, 0.84 received treatments containing organophosphate active ingredients while the remaining 0.16 were treated in dips containing pyrethroids.
Extensive use of insecticides has led to the selection of resistance to most chemical classes including organochlorines, organophosphates, carbamates and pyrethroids.
Unlike the persistent organochlorines, the organophosphate compounds that replaced them were chemically unstable and non-persistent.
In combination with atropine sulphate, which is already listed, these are recognized antidotes to poisoning by organophosphate pesticides and nerve agents.
Exposures such as organophosphates, radiation and infectious agents, could affect cognition directly by action on the central nervous system.
Previously, the principal method for the prevention or control of this disease was to plungedip sheep in a solution containing organophosphates.
This greater use of organophosphates favoured resistance development, as shown by our path analyses for disulfoton and ethion.
The effects of number of insecticide applications per year and number of organophosphate applications per year are the same for all three insecticides.
