Soil depletion in the context of "Nutrient depletion"

George Washington Carver (c. 1864 – January 5, 1943) was an American agricultural scientist and inventor who promoted alternative crops to cotton and methods to prevent soil depletion. He was one of the most prominent black scientists of the early 20th century.

While a professor at Tuskegee Institute, Carver developed techniques to improve types of soils depleted by repeated plantings of cotton. He wanted poor farmers to grow other crops, such as peanuts and sweet potatoes, as a source of their own food and to improve their quality of life. Under his leadership, the Experiment Station at Tuskegee published over forty practical bulletins for farmers, many written by him, which included recipes; many of the bulletins contained advice for poor farmers, including combating soil depletion with limited financial means, producing bigger crops, and preserving food.