Our Approach

Our approach incorporates several scales. Each scale is suitable for investigating different questions. Integration of scales allows more directed progress, e.g. Global meta-analysis results can inform the most interesting factors for screening at the climate-controlled chamber scale before monitoring 2 treatments at the lysimeter scale, and then selecting one treatment for the field scale.

Jeffery, S., Verheijen, F. G., van der Velde, M., & Bastos, A. C. (2011). A quantitative review of the effects of biochar application to soils on crop productivity using meta-analysis. Agriculture, ecosystems & environment, 144(1), 175-187.

Jeffery, S., Abalos, D., Prodana, M., Bastos, A. C., Van Groenigen, J. W., Hungate, B. A., & Verheijen, F. (2017). Biochar boosts tropical but not temperate crop yields. Environmental Research Letters, 12(5), 053001.

Jeffery, S., Verheijen, F. G., Kammann, C., & Abalos, D. (2016). Biochar effects on methane emissions from soils: a meta-analysis. Soil Biology and Biochemistry, 101, 251-258.

Gholamahmadi, B., Jeffery, S., Gonzalez-Pelayo, O., Prats, S. A., Bastos, A. C., Keizer, J. J., & Verheijen, F. G. (2023). Biochar impacts on runoff and soil erosion by water: A systematic global scale meta-analysis. Science of the Total Environment, 871, 161860.