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Table 2 The influence of stabilization treatments on pH and fresh weight (FW) shoot yield of lettuce grown on PK and BA soils

From: Effects of biochar and alkaline amendments on cadmium immobilization, selected nutrient and cadmium concentrations of lettuce (Lactuca sativa) in two contrasting soils

Stabilization treatments

PKa soil

BAa soil

Soil pH

Shoot yield (FW)

Soil pH

Shoot yield (FW)

FMB

7.04 (0.09)eb

144 (13.0)a

8.39 (0.09)bc

91.5 (3.69)a

CMB

7.02 (0.06)e

84.2(2.65)c

8.83 (0.25)a

37.6 (0.40)b

PLB

6.89 (0.04)f

25.1 (2.78)g

8.48 (0.20)b

20.5 (1.87)e

PJB

7.18 (0.10)d

31.8 (2.40)g

8.83 (0.39)a

24.0 (1.72)d

CHB

6.58 (0.03)g

55.9 (2.19)e

8.46 (0.14)b

31.1 (0.81)c

ES

7.74 (0.08)b

61.0 (1.90)e

8.88 (0.02)a

13.2 (1.34)f

LI

7.95 (0.05)a

43.2 (1.89)f

9.09 (0.23)a

10.0 (0.96)g

CON+

6.51 (0.04)g

73.1 (3.57)d

8.11 (0.04)c

12.7 (0.36)fg

CON−

7.41 (0.02)c

106 (6.77)b

8.17 (0.06)bc

30.8 (2.70)c

  1. FMB Faecal matter (Faecal cake) biochar, CMB cow manure biochar, PLB poultry litter biochar, PJB Prosopis juliflora pods biochar, CHB Coffee husk biochar, ES Eggshell waste, LI Lime, CON + spiked control, CON − non-spiked control
  2. aPK soil: Silty loam soil; BA soil: Sandy loam soil
  3. bStandard deviation in parentheses (n = 3), values for each soil with different letter within each column are significantly different (P < 0.05)
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