The Virginia Tech Soil Testing Laboratory is affiliated with both Virginia Cooperative Extension and the department of Crop and Soil Environmental Sciences, and analyzes soil samples submitted by the public and university researchers. Tests are performed to evaluate the soil’s nutrient potential and to determine the most beneficial application rates of fertilizer and lime for optimum plant growth. Accurate soil analysis with subsequent recommendations provide a tool for making economical and ecological land use decisions. Maximum economic yields are realized through careful management of nutrient availability. Over-fertilization is costly and may be damaging to the environment.