What is a treated-seed colorant and why is it used?

• A. A visual dye indicating seeds have been treated; helps prevent planting treated and untreated seeds together.
• B. A dye added to improve seed germination speed.
• C. A coating that increases pest resistance.
• D. A colorant used to identify seed origin.

Answer: (D)

Treated-seed colorant is a visual dye added to seeds that have been coated with protective treatments so handlers can see at a glance that the seed has been treated. This signaling helps prevent planting treated seeds where untreated seeds are intended, supports proper stewardship, regulatory compliance, and safer handling during production, storage, and planting. The colorant’s purpose is identification of treatment status, not to improve germination or pest resistance, and it doesn’t indicate seed origin.