Key Concept: The Law of the Minimum is a specific, named principle in plant nutrition — a direct recall fact.
Why it's correct: Justus von Liebig proposed that plant growth is capped by the SCARCEST available nutrient, regardless of how abundant the others are.
Why others fail: Mitscherlich, Blackman, and Lawes are each linked to different agronomic principles, not this specific law — only Liebig's name matches.