When converting a per-kilogram rate to a per-bag rate, which factor is used to compute the total mg ai per bag?

• A. Seed Germination Rate
• B. Bag Weight
• C. Temperature
• D. Seed Moisture

Answer: (B)

To convert a per-kilogram rate to a per-bag amount, you multiply the rate by how much seed is in the bag. The bag weight tells you the total mass of seed being treated, so the total active ingredient per bag is the per-kilogram rate (mg per kg) times the bag’s weight in kilograms. For example, if the rate is 200 mg/kg and the bag contains 5 kg of seed, the total mg ai per bag is 200 × 5 = 1000 mg. Temperature, germination rate, and seed moisture don’t set the amount of chemical applied per bag in this calculation; they don’t change the math of converting mg/kg to mg per bag, though seed moisture can affect the weight you use if you’re measuring wet weight rather than dry weight.