Table 1 Soil and plant community shoot tissue nutrient concentration as a function of sulphurous amendment and pH gradient. Means with the same suffix letter indicate treatments that are not significantly different according to Kruskal-Wallis and Bonferroni post-hoc testing (p > 0.05). Spearman’s rank order correlation of each variable against soil pH are also displayed with p value, all significant correlation (p < 0.05) are displayed in bold

From: Plant, soil and faunal responses to a contrived pH gradient

  Soil* Plant **
Variable Mean ± S.E. Spearman’s rank order correlation (Vs pH) Mean ± S.E. Spearman’s rank order correlation (Vs pH)
Al
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
173.9 ± 64.1a
109.3 ± 19.4a
163.2 ± 92.2a
−0.497
p < 0.01
Control
Elemental Sulphur
Ferrous sulphate
1652.0 ± 521.5a
720.0 ± 277.7b
693.6 ± 201.4ab
0.247
p = 0.215
Ca
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
962.1 ± 126.5a
570.5 ± 136.7b
922.5 ± 146.5ab
0.639
p < 0.01
Control
Elemental Sulphur
Ferrous sulphate
5342.8 ± 498.9a
3375.5 ± 446.0b
4955.3 ± 652.0a
0.804
p < 0.01
Cu
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
5.1 ± 1.1ab
6.2 ± 0.8a
3.1 ± 0.4b
−0.199
p = 0.291
Control
Elemental Sulphur
Ferrous sulphate
4.4 ± 0.5a
4.7 ± 0.4a
1.1 ± 0.1a
0.129
p = 0.523
Fe
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
264.0 ± 44.2ab
211.7 ± 24.7b
334.8 ± 47.5a
0.102
p = 0.593
Control
Elemental Sulphur
Ferrous sulphate
1007.7 ± 241.3a
659.8 ± 152.8a
830.0 ± 137.3a
0.123
p = 0.540
K
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
25.6 ± 3.4a
45.5 ± 10.8a
35.8 ± 4.4a
−0.282
p = 0.132
Control
Elemental Sulphur
Ferrous sulphate
7208.8 ± 1214.5a
7551.9 ± 590.6a
7152.8 ± 1468.9a
−0.151
p = 0.454
Mg
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
54.4 ± 9.4a
48.3 ± 7.0a
70.4 ± 8.0a
0.175
p = 0.355
Control
Elemental Sulphur
Ferrous sulphate
1299.0 ± 123.6a
1160.2 ± 81.3a
1371.4 ± 143.0a
0.232
p = 0.244
Mn
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
3.1 ± 1.2a
2.9 ± 0.8a
4.4 ± 1.0a
0.413
p = 0.023
Control
Elemental Sulphur
Ferrous sulphate
257.4 ± 38.8a
351.2 ± 69.0a
229.2 ± 36.2a
−0.450
p = 0.019
P
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
15.4 ± 1.5a
17.3 ± 3.2a
17.7 ± 2.2a
0.364
p = 0.048
Control
Elemental Sulphur
Ferrous sulphate
1690.9 ± 259.7a
1770.8 ± 133.5a
2065.0 ± 436.5a
0.144
p = 0.474
S
(mg/kg)
Control
Elemental Sulphur
Ferrous sulphate
8.1 ± 1.0a
9.8 ± 1.8a
9.6 ± 1.2a
0.193
p = 0.306
Control
Elemental Sulphur
Ferrous sulphate
1532.9 ± 108.9a
1380.4 ± 71.0a
1522.2 ± 197.5a
0.384
p = 0.048
Total N
(%)
Control
Elemental Sulphur
Ferrous sulphate
0.2 ± 0.0a
0.2 ± 0.0a
0.2 ± 0.0a
0.129
p = 0.498
   
Total C
(%)
Control
Elemental Sulphur
Ferrous sulphate
3.5 ± 0.3a
3.9 ± 0.4a
4.2 ± 0.4a
−0.002
p = 0.992
   
C:N Ratio Control
Elemental Sulphur
Ferrous sulphate
19.0 ± 1.2a
20.9 ± 1.7a
18.2 ± 0.9a
−0.412
p = 0.024
   
  1. *Soil nutrients are Mehlich III extractable concentrations, unless otherwise stated
  2. **Plant tissue nutrients are total concentrations