The amount of soil carbon (C) sequestered can generally be related to soil texture, soil management, and climatic variation. However, in the Northern Great Plains little information is available to quantify the C sequestration potential of soils of varying textures. This work was conducted to develop relationships for C sequestration potential based on soil texture under a variety of cultural practices. Soil samples were collected from central and southeast North Dakota from sites with differing cropping systems, including native prairie, different CRP year classes, no-till, and conventional tillage practices. Particle size analysis was determined on the 0-15 cm depth by using a hydrometer method and sand fractions were determined by sieving. Carbon analysis was performed by a high temperature combustion method. Evaluations of the relationships between soil C and texture will be discussed.