Which tool is commonly used to assess soil compaction?

• A. Soil sampler
• B. Soil penetrometer
• C. Moisture meter
• D. pH meter

Answer: (B)

The soil penetrometer is the tool commonly used to assess soil compaction because it measures the resistance of soil to penetration, which is an indicator of compaction levels. By inserting the penetrometer into the ground, users can determine how compacted the soil is based on the amount of force required to penetrate the soil at various depths. This measurement is crucial for understanding soil health, optimizing plant growth, and ensuring proper drainage and aeration.

While soil samplers, moisture meters, and pH meters are important tools in soil analysis, they serve different purposes. Soil samplers are primarily used to collect soil samples for laboratory analysis rather than to measure compaction. Moisture meters quantify the water content in soil, while pH meters assess the acidity or alkalinity of the soil, neither of which directly indicates how compacted the soil is. Thus, the soil penetrometer stands out as the specific tool designed for measuring soil compaction effectively.