Franklin Hiram King

Franklin Hiram King (8 June 1848 – 4 August 1911) was an American agricultural scientist who was born on a farm near Whitewater, Wisconsin, attended country schools, and received his professional training first at Whitewater State Normal School, graduating in 1872, and then at Cornell University.

King served as a professor of agricultural physics at the University of Wisconsin–Madison from 1888 until 1902. Interested in a wide range of subjects throughout his career, King made major contributions during these years in research and teaching that dealt with applications of physics to agriculture. Most attention was given to soil physics, for example, water-holding capacities of soils, moisture requirements of plants, aeration, movement of water in soils, movement of groundwater, the drafts of plows, and the lifting power of windmills; he also began studies of soil fertility. The impact of his career was greatest in the field of soil science. He has been called the father of soil physics in the United States.