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Table 4 Main characteristics of the fertilizers used

From: Potential of three microbial bio-effectors to promote maize growth and nutrient acquisition from alternative phosphorous fertilizers in contrasting soils

Fertilizers Abbr. Inorg/org Dry matter content (%) Total P
(mg P g−1)
Water extractable P
(mg P g−1)
Total N
(mg N g−1)
Ammonium
(NH4 + − N)
(mg N g−1)
Triple super phosphate TSP Inorg 100 201.0 201.0 0 0
Rock phosphate RP Inorg 100 115.4 0.22 0 0
Sewage sludge ashes (Germany) SSA-DE Inorg 100 103.5 0.79 n.d. n.d.
Sewage sludge ashes (Denmark) SSA-DK Inorg 100 89 n.d. n.d. n.d.
P-enriched BOF slag (Germany) LSD/SSA Inorg 100 18.0 0.0 n.d. n.d.
Fresh digestate (Switzerland) FrDi Org 48.0 4.36 0.130 14.6 0.61
Compost (Switzerland) Comp-CH Org 59.6 2.45 0.043 10.4 0.24
Compost (Germany) Comp-DE Org 57.2 1.42 0.67 n.d. n.d.
Composted cattle manure (Italy) C-MComp Org 60.0 7.75 n.d. 22.7 n.d.
Composted horse manure (Italy) H-MComp Org 67.0 10.0 n.d. 14.2 n.d.
Sewage sludge (Germany) SS-DE Org 99 38.1 0.52 n.d. n.d.
Sewage sludge (Denmark) SS-DK Org 23.0 30.4 1.5 n.d. n.d.
  1. n.d. means not determined