Slit-tillage may provide a long-term, less energy-intensive method for disrupting dense, root-restrictive soil layers in many Atlantic and Gulf Coastal Plain soils. The objective of field research conducted during 1986, 1987, and 1988, was to evaluate effectiveness of slit-tillage for grain sorghum [Sorghum bicolor (L.) Moench] production on a Norfolk (fine-loamy, siliceous, thermic, Typic Paleudult) loamy sand near Florence, SC. Three-year average grain yields for slit-tillage, in-row subsoiling, and no-tillage were 50, 46, and 39 bu/acre, respectively. Soil pits excavated to a depth of 3 ft in 1988 showed plant roots in slits that had been formed in 1986, 1987, and 1988. Another experiment showed that tillage energy requirements for slit-tillage were lower than for conventional subsoil shanks. A two-row slit-tillage implement had a draft of 3930 lb and required 20.1 horsepower per row. Slit-tillage appears to be a viable practice for Coastal Plain soils because it forms very small, macropore-like openings through the restrictive layers that are readily filled with plant roots and thus remain open for more than 1 yr. No problems were identified for the technique suggesting that equipment manufacturers may want to consider further development of slit-tillage tools for Coastal Plain soils.