What is the main limitation of soils classified under subclass 'P'?

Soils classified under subclass 'P' are characterized by excessive stoniness that significantly hinders tillage operations. This stoniness presents a considerable challenge for farmers and land managers, as it complicates soil preparation, planting, and ultimately can affect crop yields. The presence of stones can damage equipment, make it difficult to establish a seedbed, and require additional time and labor to manage these physical obstacles.

While other subclasses may deal with limitations such as high water tables, salinity, and inundation risks, subclass 'P' specifically emphasizes the challenge of stoniness. This is crucial for understanding soil management practices in rural areas, as it affects both agricultural productivity and the types of crops that can be effectively cultivated in those soils. Knowing the specific limitations of different soil subclasses aids in selecting appropriate land-use strategies and best practices for enhancing soil management.