What soils are common in your area? Which ones are the most fertile?

In our area there is a very widespread and fertile soil – black soil. This soil is rich in humus and has a dark color. Chernozem is rich in mineral salts, as well as elements such as nitrogen, sulfur, iron, phosphorus, calcium, magnesium. Chernozem soils are very air permeable, therefore they are rich in oxygen, they can also retain moisture for a long time, which contributes to good plant growth. This soil has natural fertility, unlike other soils that periodically need fertilization.