Regur soil, also known as black cotton soil, is a type of soil primarily found in the {Deccan Plateau} region of India. It is rich in minerals and has a high moisture-retaining capacity, making it ideal for growing cotton and other crops. The soil is formed from volcanic rock weathering and is characterized by its dark color and clayey texture. This soil type is known for its ability to expand and contract with moisture changes, which can affect its stability. Regur soil is also rich in nutrients like calcium, magnesium, and iron, supporting diverse agricultural practices in regions where it is prevalent.