Table 4 Sequentially extracted P forms in soil treated with mineral P (MP), meat & bone meal ash (MBMA) or dried distillers grain ash (DDGA), averaged over rates of P application).

From: Phosphorus speciation in a prairie soil amended with MBM and DDG ash: Sequential chemical extraction and synchrotron-based XANES spectroscopy investigations

P Source

Resin Pi

NaHCO3 Pi

NaHCO3 Po

NaOH Pi

NaOH Po

HCl Pi

Residual P

μg P g−1 soil

MP

30a

29a

16b

56a

104a

107c

102b

MBMA

8b

15c

25a

39c

73b

230a

114a

DDGA

13b

22b

28a

47b

72b

173b

90c

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