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Heritage Science

Table 4 The nitrogen isotope values and the total nitrogen content of fertilizers

From: Experimental archaeological study in China: implications for reconstruction of past manuring and dietary practices indicated by δ15N values of Setaria italica and Panicum miliaceum

Type

Before fermentation (B)

After fermentation (A)

△(A−B)

δ15 N (‰)

TN (%)

δ15 N (‰)

TN (%)

△15N(A−B) (‰)

△TN(A−B) (%)

Pig manure

4.2 ± 0.1 (n = 2)

3.08

9.2 ± 0.2 (n = 2)

1.77

5.0

− 1.31

Cattle manure

2.9 ± 0.1 (n = 2)

2.49

7.2 ± 0.2 (n = 2)

2.24

4.3

− 0.25

Sheep manure

9.3 ± 0.6 (n = 2)

1.66

9.5 ± 0.2 (n = 2)

2.27%

0.2

0.61

Chicken manure

8.3 ± 0.7 (n = 2)

2.35

9.5 ± 0.4 (n = 2)

1.56%

1.2

− 0.79

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