What does per-seed dose mean in seed treatment rate expressions?

• A. The amount of active ingredient applied to a single seed.
• B. The total dose for a field.
• C. The weight of seed coated.
• D. The percent of seeds treated.

Answer: (A)

Per-seed dose is the amount of active ingredient assigned to a single seed. This focuses on how much chemical each individual seed receives, expressed in units like mg or μg per seed, so the treatment delivers a defined amount to every seed you plant. That’s why it’s the best choice here: it directly quantifies the dose on a per-seed basis, rather than describing how much chemical is needed for a whole field (per area), the weight of seed that ends up coated, or the proportion of seeds that were treated. In practice, you might see labels stating a certain milligrams per seed, meaning that exact amount is applied to each seed, and you can calculate total needs by multiplying by the number of seeds.