What issue is associated with the 'T' subclass of soils?

The 'T' subclass of soils is primarily associated with topographical limitations that can significantly impact crop growth. In this context, 'T' represents soils that are influenced by their position in the landscape, often leading to challenges such as poor drainage, erosion, and the inability to effectively use machinery for planting and harvesting. These topographical factors can create variations in microclimates within a field, which in turn affects crop selection and productivity.

While other aspects like water retention, stoniness, and cumulative adverse soil conditions can also affect agricultural viability, the defining characteristic of the 'T' subclass focuses on how terrain and slope can restrict agricultural practices and crop performance. This is particularly pertinent in rural settings, where uneven land may hinder cultivation techniques and the overall management of crops. Thus, understanding how topography influences soil behavior and land use is crucial for effective soil management and agricultural planning.