Recent Research on Biochar’s Potential in Soils

The following link leads to an article from Thayer Tomlinson, published by the Ecological Landscaping Association.
http://www.ecolandscaping.org/05/biochar/recent-research-on-biochar%E2%80%99s-potential-in-soils/
"... Until recently, it was believed that biochar’s beneficial soil impacts were seen primarily in soils with significant constraints, but two recent publications examine its impact on more fertile Midwestern agricultural soils, showing that biochar can benefit even healthy, fertile soils..."