1. The stability of biochar in the environment / Andrew R. Zimmerman and Bin Gao -- 2. Biochar impact on plant resistance to disease / E.R. Graber and Y. Elad -- 3. Biochar-fungi interactions in soils / Katja Wiedner and Bruno Glaser -- 4. The potential of biochar amendments to remediate contaminated soils / Jose L. Gomez-Eyles. [et al.] -- 5. Studying the role of biochar using isotopic tracing techniques / Bruno Glaser, Katja Wiedner and Michaela Dippold -- 6. Designing specific biochars to address soil constraints : a developing industry / Stephen Joseph. [et al.] -- 7. A comparison of methods to apply biochar into temperate soils / Don Graves.