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Table 1 Soil characteristics

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

Soil-ID Geographic origin Management Soil type Texture Soil pH C org Phosphorus
Clay Sand Silt (CaCl2)   CAL/DLd
(%) (%) (%)   (%) (mg P kg−1)
1-Buusa Buus
(Switzerland)
Rotation: Lay rotation
Fertilization: organic, low input
Site type: farmer field site
Loamy soil 29.9 3.90 66.2 6.6 2.64 6.5
2-Castela Castel Volturno (Italy) Rotation: Maize-clover
Fertilization: mineral, low input
Site type: farmer field site
Vertic Xerofluvent 36.5 19.0 44.5 7.3 1.34 19.2
3-Humpoleca Humpolec
(Czech Republic)
Rotation: P-WW-SBc
Fertilization: mineral, low input
Site type: experimental station
Cambisol
Loamy sand
15.9 52.9 31.2 5.2 1.63 45.0/59.8
4-Lukaveca Lukavec
(Czech Republic)
Rotation: long-term protection area around field experiment
Fertilization: none
Site type: experimental station
Cambisol
Loamy sand
14.0 56.0 30.0 5.4 1.5 48.0/49.8
5-Vördenb Vörden
(Germany)
Rotation: before 2009 grazing area for wildlife – since 2009 field forage cultivation
Fertilization: low input (organic and mineral)
Site type: farmer field site
Cambisol 12.0 41.1 46.9 5.0 0.72 11.4/9.4
6-Taastrupa Taastrup
(Denmark)
Rotation: Barley-barley
Fertilization: no P fertilizer since 1964
Site type: long-term field trial
Sandy loam 13.4 55.4 31.2 5.8 1.09 15.3/17.9
  1. aData were recorded on the pure soil
  2. bData were recorded on the 2:1 soil: sand mixture used in the pot experiments
  3. c P potato, WW winter wheat, SB spring barley
  4. dP measured after double lactate (DL) extraction is also given for soil with pH < 6 (exception for soil 3)