Table 10.1 Sand, silt and clay
contents for a Mottled Duric
Pallic Soil (Poporangi, SB09761)
from the Hawke’s Bay region
Horizon
Depth (cm)
Sand (%)
Silt (%)
Clay (%)
A
0 –15
29
48
21
AB
15–25
30
44
25
Bwg1
25–38
32
47
20
Bwg2
38–49
24
55
19
2Btx
49–52
27
47
24
3Bmq1
52–65
32
53
13
3Bmq2
65–83
38
48
13
3Bmq3
83–102
38
47
13
4C1
102–112
80
11
7
4C2
112–137
88
7
3
5C
180–185
92
5
1
Fig. 10.10 Mean and upper and
lower quartiles for pH, organic
carbon, and phosphorus retention
for Pallic Soils in the New
Zealand National Soil Data
Repository
Table 10.2 Soil chemical
properties for a Mottled Duric
Pallic Soil (Poporangi SB09761)
from the Hawke’s Bay region
Horizon Depth
(cm)
pH
(in H 2 O)
Carbon
(%)
Nitrogen
(%)
CEC
a
(cmol
(+) kg
−1
)
Sum bases
(cmol
(+) kg
−1
)
P retention
(%)
A
0 –15
5.1
2.9
0.28
15.1
5.8
24
AB
15–25
5.6
1.3
0.14
10.7
6.3
22
Bwg1
25–38
6.2
0.6
0.08
8.7
6.6
17
Bwg2
38–49
6.5
0.3
0.05
9.0
7.7
14
2Btx
49–52
6.5
0.3
0.04
12.4
11.5
10
3Bmq1 52–65
6.7
0.2
0.03
10.1
10.7
5
3Bmq2 65–83
6.8
0.2
0.02
12.1
13.1
5
3Bmq3 83–102 6.9
0.2
0.02
12.0
13.5
6
4C1
102–
112
6.6
0.2
–
–
–
–
4C2
112–
137
6.4
0.2
–
–
–
–
5C
180–
185
6.6
0.2
–
8.0
7.7
–
a CEC = cation exchange capacity
156
10 Pallic Soils