How is the percent coverage of a seed batch evaluated during quality control?

• A. Visual inspection only.
• B. Sample seeds visually or with a measurement method to assess uniformity of coating; compare to target coverage.
• C. Weigh seed lots to estimate coverage.
• D. Count coating droplets under a microscope.

Answer: (B)

During quality control, percent coverage is assessed by taking a representative sample of seeds and evaluating how much of each seed’s surface is coated. This is done either by visual inspection or with a measurement method that quantifies coverage, and then the result is compared to the target coverage. Using a measurement method provides an objective, repeatable estimate of both how much coating is on the seeds and how evenly it’s distributed across the batch. Visual inspection alone can be subjective and may miss variability, while weighing seed lots or counting coating droplets doesn’t directly measure how much surface area is covered.