University of Arkansas at Monticello 1 article published in JoVE Environment Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures Michael A. Blazier1, Hal O. Liechty2 1Hill Farm Research Station, Louisiana State University Agricultural Center, 2School of Forestry and Natural Resources, University of Arkansas at Monticello Labile organic carbon (LOC) and the potential carbon turnover rate are sensitive indicators of changes in soil nutrient cycling processes. Details are provided for a method based on fumigating and incubating soil in a series of cycles and using the CO2 accumulated during the incubation periods to estimate these parameters.