Charcoal Carbon in U.S. Agricultural Soils

Erin Rasmussen

Jan O. Skjemstad *a,
Donald C. Reicoskyb,
Alan R. Wiltsb and
Janine A. McGowana

High levels of charcoal C resulting from repeated historical burning of grasslands, open woodlands, and agricultural crop residues have been reported in soils from Australia and Germany. In this study, five U.S. soils were selected from long-term research plots in widely different agricultural areas. The charcoal C content was estimated on each soil using a combination of physical separation, high energy photo-oxidation and solid-state 13C nuclear magnetic resonance (NMR) spectroscopy. These analyses showed that all five soils contained measurable amounts of charcoal C,

doi: 10.2136/sssaj2002.1249Best jordan Sneakers | Nike Air Force 1 '07 3 Low White/University Blue For Sale , Idae 2021