i * pH 8.1 3.36 4.19 1.95 81.7 7.8 4.01 11.06 1.80 985.2 8.4 2.68 3.21 0.79 54.2 8.6 1.16 2.55 0.37 32.8 0.0 4.5 3.7 0.26 6.4 12.6 1.71 35.6 37.7 0.57 16.7 22.2 meq per 100 grams of oven dry soil *Sodium *Magnesium *Potassium Phosphorus (ppm) Beach Ridge Sand Lomuilal Sand Gogan Gravelly Sandy Loam Kabelle Sand (from Kenady 1962). Rongelap Gravelly Sand of the five most extensive soil series A, horizon Nutrient levels and soil reaction in the surface Per Cent Nitrogen Per Cent Organic Matter *Exchange Capacity Soil Series Table I.