These are the competing Sassafras soils, the related Westphalia soils and the Adelphia , Aura , Collington , Donlonton , Evesboro , Galestown , Howell , Monmouth and Shrewsbury soils. The Adelphia, Collington, Donlonton, Monmouth, and Shrewsbury soils have significant amounts of glauconite within the series control section. Aura soils have hues of 5YR or redder in the IIB2t horizons. Evesboro and Galestown soils have sandy particle size control sections. Howell soils have clayey particle size control sections.
Permeability is moderately rapid in the A and C horizons and moderate in the B horizon.
Surface runoff is medium to rapid. The Marr soils have been farmed for nearly 300 years, and there are very few areas that have not at one time been tilled. The most important crop is tobacco. They are also used for growing general crops, soybeans, and hay. Most of the present woodlands consist of mixed hardwoods, dominated by oaks.