proposed amendment to the food and drug regulations 1344 difenoconazole available in english and french pages 1320-1323 difenoconazole is registered under the pest control products act as a fungicide for the control of seed-borne septoria seedling blight caused by seed- and soil-borne fusarium general seed rots caused by penicillium and aspergillus covered smut false loose smut and pythium damping-off and for suppression of common root rot cochliobolus spp. fusarium crown rot fusarium foot rot and take-all on wheat as a seed treatment. a maximum residue limit mrl has been established under the food and drugs act for residues of difenoconazole resulting from this use at 0.1 parts per million p.p.m. in wheat. mrls have also been established at 0.05 p.p.m. in eggs and meat and meat by-products of cattle goats hogs poultry and sheep and at 0.01 p.p.m. in milk to cover residues in food derived from animals fed with crops treated with difenoconazole. by virtue of subsection b.15.002 1 of the food and drug regulations the mrl for other foods is 0.1 p.p.m. the pest management regulatory agency pmra of health canada has recently approved an application to amend the registration of difenoconazole in order to allow its use for the control of seed-borne septoria seedling blight general seed rots covered smut false loose smut and pythium damping-off and for suppression of common root rot fusarium crown rot fusarium foot rot and take-all on barley rapeseed canola and mustard as a seed treatment. this proposed regulatory amendment would establish mrls for residues of difenoconazole resulting from this use in barley mustard seed and rapeseed canola in order to permit the sale of food containing these residues. after the review of all available data the pmra has determined that mrls for difenoconazole of 0.05 p.p.m. in mustard seed 0.03 p.p.m. in rapeseed canola and 0.01 p.p.m. in barley would not pose an unacceptable health risk to the public. this proposed regulatory amendment would also amend the chemical name of difenoconazole in order to comply with international nomenclature conventions