What steps help prevent cross-contamination between treated and untreated seed during storage?

• A. Store treated and untreated seeds together in labeled bins.
• B. Mix treated seeds with untreated seeds to save space.
• C. Use dedicated storage areas and equipment, clearly labeled containers, physical separation, and thorough cleaning between lots.
• D. Reuse same storage containers for all seeds.

Answer: (C)

Preventing cross-contamination between treated and untreated seed during storage comes down to physical separation and diligent handling practices. The best approach is to have dedicated storage areas and equipment for treated versus untreated seed, use clearly labeled containers, keep the lots physically separated, and thoroughly clean between lots. This combination minimizes the chance that treatment residues or dust transfer from one seed type to the other and keeps labeling accurate, so you don’t mix up seed that should or shouldn’t be treated.

Storing treated and untreated seeds together invites contamination through dust, spills, or shared handling, and mixing seeds defeats the purpose of treating or protecting untreated seed. Reusing the same containers without proper cleaning can transfer residues from one lot to another, compromising seed quality and safety.