Cumulative release of nitrate during repeated extractions of biochar with 2 M KCl

Cumulative release of nitrate during repeated extractions with 2 M KCl of three contrasting biochars after: (1) soaking 1:10 (w/v) in 19.4 mMol NH4NO3 solution at 22±3°C for 72 h (2) soaking 1:10 (w/v) in 19.4 mMol NH4NO3 solution at 65±1°C for 72 h (3) manual picking from mature compost after biochar co-composting with mixed manures as described in doi:10.1371/journal.pone.0171214. Data of nitrate release from these biochar containing composts: doi:10.1594/PANGAEA.867498