Table
I.
Nutrient levels and soil reaction in the surface A, horizon
of the five most extensive soil series
Soil Series
Per Cent Nitrogen
Per Cent Organic Matter
*Exchange Capacity
*Sodium
*Magnesium
*Potassium
Phosphorus (ppm)
PH
Al
*
Rongelap
Gravelly
Sand
Gogan
Gravelly
Sandy Loam
0.57
16.7
22.2
3.36
4.19
1.95
81.7
8.1
1.71
35.6
37.7
4.01
11.06
1.80
985.2
meg per 100 grams of oven dry soil
7.8
Lomuilal
Sand
0.26
6.4
12.6
2.68
3.21
0.79
54.2
8.4
(from Kenady 1962).
Beach
Ridge
Sand
0.09
4.5
3.7
1.16
2.55
0.37
32.8
8.6
Kabelle
Sand
0.14
7.7
5.7
1.52
1.92
0.46
32.1
8.6