Treated seed labels must contain which critical information?

The correct answer emphasizes the importance of labeling for treated seeds, which is critical for safety and compliance. Labeling the seeds with the words "TREATED SEED" serves as a clear warning to users that these seeds have undergone chemical treatment, which may pose hazards during planting or handling. Including a signal word indicating the type of chemical treatment provides essential safety information, alerting users to potential toxicity and necessary precautions.

This labeling requirement is not just about identifying the seed; it ensures that individuals handling the seeds are aware of the treatments applied and can take appropriate safety measures to protect themselves and the environment. Proper labeling also aligns with regulations aimed at preventing misuse or unintentional exposure to harmful substances.

While other options might imply useful information about the seed itself, they don't directly address the critical safety and regulatory aspects of treated seed labeling.