Soil texture refers to the amount of sand, silt and clay percentages. The best combination for plant growth is a loamy soil. Loamy soils consist of 40% sand, 33.1% silt, and 26.9% clay.

A sample of the surface soil, which must be handtextured. This information will be used to select the surface textural class and the surface textural group in Part 1. A textural triangle, which will ...