This study aimed to find out whether adding biochar to an engineered green roof soil blend would ameliorate the soil in order to successfully grow spray-free vegetables at similar yields to the Farm’s older plots with more productive soil.

In a Nutshell

• Farmers found that vegetables grew well in both the control and biochar- amended plots when compared to crops that grew poorly in the originally installed engineered soil.
• However, biochar amendment did not significantly improve crop quality, yield, or soil health during the first year of application.