What type of sampling method involves removing a square foot of sod?

The method of removing a square foot of sod is referred to as square-foot sampling. This technique is particularly effective for assessing population densities of pests or evaluating the health of turfgrass in a defined area. By lifting a square foot of sod, you can observe the soil condition, root development, and the presence of pests or beneficial organisms directly in that specific area.

Square-foot sampling is advantageous because it provides a controlled method to gather data, making it easier to analyze and compare results over time or across different areas of a turfgrass management zone. It allows for precise measurements and a hands-on approach to pest management strategies, enhancing the overall understanding of the ecosystem within that small area.

In contrast, flotation sampling, pitfall trapping, and visual inspection each serve distinct purposes and might not allow the same level of detailed examination or quantitative assessment of soil and turfgrass health as square-foot sampling does.