Which option correctly describes the basis of the One-Third Rule according to the material?

• A. It was based on published studies in common turf species
• B. It was based on research of a specific species not listed here
• C. None of these answers
• D. It was derived from general mowing guidelines

Answer: (C)

The One-Third Rule is a practical mowing guideline, used to protect turf health by leaving enough leaf area for photosynthesis and quick recovery after mowing. According to the material, its basis isn’t tied to published studies, isn’t specific to any one species, and isn’t simply a general mowing guideline. It’s a rule of thumb developed from field experience rather than formal research or a particular species focus. That’s why the statement “None of these answers” best describes its basis.