The mineral components of soil may exist as discrete particles, but are more commonly associated with one another in larger aggregates that provide structure to soil. These aggregates, or peds ...

According to the land ministry, large soil mounds that are more than 3,000 square meters exist in 51,000 sites under the jurisdiction of around 1,000 local authorities. These local authorities ...

When European-American settlers first began ploughing in Iowa, they found the weather and local geology had combined this organic mulch with sand and silt to form a nutrient-rich type of soil ...