A soil auger is a tool used for drilling holes in the ground to collect soil samples or to create holes for planting. It consists of a helical screw blade that helps to remove soil as it is twisted into the ground. Soil augers come in various sizes and types, including hand-held and motorized versions, making them suitable for different tasks and soil conditions. These tools are commonly used in fields like agriculture, geology, and environmental science to analyze soil composition and structure. By obtaining soil samples, researchers and farmers can better understand soil health, fertility, and moisture levels, which are essential for effective land management and crop production.