11
Table III.
Composition of representative soil types from Rongelap Atoll (after Kermady 1962).
Kabelle Sand, a young soil
Soil Depth - inohes
Per Cent Material ~> 2 mm
Per Cent Nitrogen
eee HH
Per Cent Organic Matter
Exohange Capacity
Sodium
Magnesium
Caloium
Potassium
Phosphorus (ppm)
pH
0-1
3h
1-11
8
11-38
2
0.22
0.02
0.01
6.3
1.57
0.3
3.01
0.1
1.37
1.04
1.16
8.1
3.01
0.57
30.0
8.9
--
2.88
0015
12.0
9.1
2.6
1.37
2.65
0.20
12.0
9.2
Lomuilal Sand, an old soil
Soil Depth - inches
Per Cent Material >> 2 mm
eHhED RH
Per Cant Nitrogen
Per Cant Organio Matter
Exchange Capacity
Sodium
Magnesium
Caloium
Potaasium
Phosphorus (ppm)
pH
0-3
0
3-10
L0-12
5
18
0.29
2.8
0.07
2.3
2.73
4.66
5.02
1.09
105.9
0.73
8.36
1.87
0.18
15.1
0.82
1.05
2.50
0.19
14.1
8.6
8.3
14.2
8.4
2.3
0.08
2.2
2.6
12-21
12
21-48
2
0.04
1.9
0.02
1.7
0.82
0.85
2.31
0.16
5.0
0.64
0.83
2.35
0.16
5.0
8.8
9.1
1.1
0.6
Gogan Gravelly Sandy Loam, an old soil
Soil Depth - inches
a
Per Cent Material -> 2 m
1~
10
Ou]
20
1-5
20
Per Cent Nitrogen
Per Cent Organis Matter
Exohange Capacity
1.54
21.4
20.5
1.96
-43.6
0.42
5.9
17.9
Magnesium
Caloium
7.0
10.3
7.4
24.2
4.0
14.1
1330.4
892.8
74
Fel
Sodiun
Potassium
Phosphorus (ppm)
pH
*
meq per 100 gm dry soil
2.0
--
3.0
1.80
0.8
5-12
27
0.18
6.8
72
0.4
12-20
20-26
39
56
0.07
2.6
2.6
0.4
0.05
2.6
1.7
0.4
2.2
6.2
1.2
707
1.1
7.8
415.5
216.3
150.6
25.1
709
8.2
8.6
8.8
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