Turf soil samples should include the foliage and thatch layer.

Turf soil samples should include the foliage and thatch layer.

• A. True
• B. Not necessary
• C. Only soil sample
• D. False

Answer: (D)

In turf soil testing, you want a sample that represents the mineral soil where roots actually take up nutrients. Foliage and thatch are organic debris, not part of the soil itself, and they can distort test results by adding organic matter, changing moisture dynamics, and altering readings of pH and nutrients. The proper approach is to remove the thatch and collect soil cores from the root zone to the recommended depth (often 0–6 inches), then mix into a composite sample for analysis. If you’re curious about thatch specifically, it can be evaluated separately, but it isn’t included in the standard soil test. So the statement is false.