Soil property

Poultry manure

Percent (g/100g)

Biochar-based

Percent (g/100g)

pH

6.8

6.6

Nitrogen

2.2

4.1

Phosphorus

0.88

2.0

Potassium

1.99

5.2

Calcium

1.42

0.42

Magnesium

0.58

0.24

C:N

6.7

4.8

Organic matter

14.3

12.5