Soil microbial activity under different grass species: Underground impacts of biofuel cropping

▶ Switchgrass had the lowest SOC and C and N mineralization rates. ▶ Switchgrass sustained the least active microbial community. ▶ Switchgrass may sequester more soil C by having a slower rate of C turnover than the other treatments. ▶ SOC under the buffalograss and sideoats grama was nearly twice what it was under switchgrass.