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F~ <br />• <br />Chemical Determinations <1) Reference <br />Table 2.7-2. Procedures used in laboratory analysis of soil and overburden core <br />samples. <br />pH, water American Society of Agronomy (ASA) Monograph <br />No. 9, Methods of Soil Analysis, method 60- <br />3.4; pp. 922-933, except that a 1 to 2 sample <br />to water ratio is used. <br />pH, 0.01 M CaC12 Solution <br />Soluble Salts (conducCivity) <br />Sodium, water soluble <br />Sodium, ammonium <br />soluble <br />Cation Exchange Capacity <br />Exchangeable Sodium <br />Percentage <br />Potassium, available <br />Phosphorus, NaHC03 <br />cont. next page. <br />ASA Agronomy Monograph No. 9, method <br />60-3.5, pp. 923 except tht a 1 to 5 sample to <br />water ratio is used. <br />.American Society for Testing and Materials <br />(ASTM), Publication STP479, pp. 288-290, note <br />that a 1 to 2 sample to water ratio is used. <br />ASA Agronomy Monograph N0. 9, method <br />62-3.3.2, pp. 944-945, a 1 to 2 water extract <br />is analyzed, <br />ASA Agronomy Monograph No. 9, meChods acetate <br />71-3.2, 72-3.2, pp. 1026-1027, and pp. <br />1033-1034 <br />ASA Agronomy Monograph No. 9, method 57-3, <br />pp. 899-900. <br />ASA Agronomy Monograph No. 9, sections <br />72-3 and 72-4, pp. 1033-1034. Note that this <br />is calculated by the following equation: <br />ESP = (100)(Na) <br />cation exchange capacity <br />ASA Agronomy Monograph No. 9, method 71-3.2, <br />pp. 1026-1027, and section 71-4, pp. 1027- <br />1028. <br />ASA Agronomy Mu nograph Nu. 9, method <br />soluble 73-4.4, pp. 1044-1047 <br />(1) Air-dried cure sample material ground to nominal-I50 mesh for analysis. <br />Air-dried soil sample material crushed to pass a 10 mesh (1.68mm) screen for- <br />analysis. <br />-~ 2-358 <br />