Malathion residue can linger in bins for months after treatment and can be transferred from the bin to canola seed, putting marketability at risk. Canola found with malathion residues is unacceptable for export customers and can damage Canada’s reputation as a trusted supplier of high-quality canola.
Reduce the risk of contaminating your harvest by planning storage requirements accordingly — never use malathion to prepare canola for storage or treat bins in which you plan to store canola.
Malathion can be used to treat cereals and other non-oilseed grains in bins that have been contaminated with insects. Any grower doing so should record the date of treatment and must not use that bin to store canola in this growing season.
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