11
Table III.
Composition of representative soil types from Rongelap Atoll (after Kenady 1962).
Kabelle Sand, a young soil
Soil Depth- inches
Per Cent Material >> 2 mm
Per Cent Nitrogen
“
Per Cent Organic Matter
* Exchange Capacity
* Sodium
* Magnesium
* Caloium
* Potassium
Phosphorus (ppm)
pH
0-1
1-11
11-98
3h
0.22
8.1
6.3
1.57
1.37
3.01
0.57
30.0
8.9
8
0.02
-0.3
3.01
1.04
2.88
0015
12.0
Gel
2
0.01
2.6
Ol
1.37
1,16
2.65
0.20
12.0
9.2
Lomuilal Sand, an old soil
*
*
*
*
*
Soil Depth - inches
0-3
3-10
10-12
Per Cent Material >> 2 mn
Per Cent Nitrogen
0
0.29
5
0.07
18
0.08
12
0.04
2.2
1.9
Per Cent Organic Matter
Exohange Capacity
Sodium
Magnesium
Caloiun
Potassium
Phosphorus (ppm)
pH
2.8
2.3
14,2
2.73
4.66
5.02
1,09
105.9
8.4
2.3
0.73
8.36
1,87
0.18
15.1
2.6
0.82
1.05
2.50
0.19
V2
8.6
8.3
12-21
2148
2
0.02
1.7
ll
0.82
0.85
2.31
0.16
5.0
0.6
0.84
0.83
2035
0.16
5.0
8.8
9.1
Gogan Gravelly Sandy Loam, an old soil
Soil Depth « inches
Per Cent Material -> 2 mn
Per Cent Nitrogen
Per Cent Organio Matter
* Exohangs Capacity
* Sodium
* Magnesium
® Caloiun
* Potasaium
Phosphorus (ppm)
pH
*
meq per 100 gm dry soil
14
Q-1
1-5
5-22
12-20
20-26
10
1.54
20
1.96
20
O42
27
0.18
39
0.07
56
0.05
20.5
43.6
179
72
0.4%
2.6
0.4
1.7
74
4.0
2.2
1.2
21.4
“-
2.0
-
7.0
10.3
-~
1990.4
74
°
3.0
24.2
1.80
892.8
7ei
5.9
0.8
14,1
-415.5
79
6.8
6.2
-216.3
8.2
2.6
767
-150.6
8.6
2.6
Ou
ll
7.8
~251
8.8