Treatments

Total N in soil

(%)

Total N in biomass/biochar

(%)

Change in total N of treated soil

(%)

Cow dung

Biomass (CM)

0.06

1.58

0.15

Biochar (CC)

0.06

1.19

0.15

Poultry manure

Biomass (PM)

0.06

1.67

0.16

Biochar (PC)

0.06

1.09

0.15

Sludge

Biomass (SM)

0.06

0.57

0.15

Biochar (SC)

0.06

0.50

0.15

No treatment

Control (Cont)

0.06

No treatment

0.14