The aims of this work were to monitor the dissipation dynamics organophosphate insecticides applied corn grains stored in supervised experiments, establish and determine minimum period post application necessary comply with established commercial standards. dichlorvos (DDVP), hlorpyrifosmethyl+deltamethrin (CPM) pirimiphos-methyl (PMM) maize grains, which then for 120 days. samples processed ex...