ll Table IIL. Composition of representative soil types from Rongelap Atoll (after Kemady 1962). Kabelle Sand, a young soil Soil Depth = inohes Per Cent Material >> 2 om eR E 11-38 8 2 0.22 0.02 0.02 Exohange Capacity 6.3 0.3 O01 Sodium Magnesium Calotun Potassium Phosphorus (ppm) pi 34 1-1] Per Cent Nitrogen Per Cant Organis Matter ae 0-1 8.1 1.57 1.37 3.01 0.57 30.0 8.9 “- 3.01 1.04 2.68 0015 12.0 9ol 2.6 1.37 1.16 2.65 0.20 12.0 9.2 ae EB Lomuilal Sand, an old soil Soil Dapth- inches ors] Per Cent Material => 2 mm 0 Per Cent Nitrogen Per Cent Organio Matter Exohange Capacity Sodium Magnesium Caloium Potaasium Phosphorus (ppm) pH 0.29 2.8 14.2 2.73 4.66 5.02 1.09 105.9 8.4 4-10 10-12 5 18 0.07 2.3 2.3 0.73 8.36 1.87 0.18 15.1 8.6 0.08 2.2 2.6 0.82 1.05 2.50 0.19 14,2 8.3 12-21 12 21 48 2 0.04 1.9 1. 0.82 0.85 2.31 0.16 5.0 8.8 0.02 1.7 0.6 0.84 0.83 2035 0.16 5.0 9.1 5212 12-20 20-26 27 0.18 6.8 7.2 0.4 2.2 6.2 39 0.07 2.6 2.6 0.4 1.2 7.7 56 0.05 2.6 1.7 0.4 ll 7.8 Gogan Gravelly Sandy Loam, an old soil & eee Soil Depth « inehes Per Cent Material => 2 mm Per Cent Nitrogen Per Cent Organic Matter Exchange Capacity Sodium Magnesium Caloium Potassium Pheaphorus (ppm) pH * meq per 100 gm dry soil 140 0-1 1-5 10 1.54 21.4 20.5 260 7.0 10.3 20 1.96 -43.6 3.0 74 24.2 20 0.42 5.9 17.9 0.8 4.0 Wei -— 1.80 -- “= oe a0 1390.4 892.8 415.5 216.3 150.6 2501 74 Jel 79 8.2 8.6 8.8