potato groups, potato classificaiton, agronomy department, agriculture deparment
Agricultural Extension Service, South Dakota State College of Agriculture and Mechanic Arts
There are a large number of potato groups in the classification of this crop. These groups are different from varieties of potatoes. Each group includes several varieties. Altogether there are about a dozen groups but we will list hare only the important groups grown in South Dakota.
Valentine, George H., "Potato Groups and Varieties" (1923). SDSU Extension Circulars. 115.