Efficacy of different formulations of pirimiphos-methyl and etrimfos when admixed with oilseed rape, against susceptible storage insect and mite species

The efficacy of emulsifiable concentrate and dust formulations of pirimiphos-methyl and etrimfos were assessed, when admixed with oilseed rape, 1 day after treatment, against susceptible beetle, moth and mite species. The minimum intended doses required to provide complete mortality differed with each pest species. If Maximum Residue Limits are introduced that are equivalent to less than one quarter of the current pesticide application rates, their effective use may be prevented, as control of Acarus siro and Tyrophagus putrescentiae may not be achieved.