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6 <br />• Table 3. Important properties of the soil and spoil <br /> used in the sail depth study . <br /> Property Soil Spoil <br /> pH 7.1 7.1 <br /> EC (mmhos cm~) 0.6 2.5 <br /> ESP <1 1.4 <br /> SAR 0.2 0.6 <br /> CEC (meq 100 g'~) 23.4 27.3 <br /> Organic matter ($)Z 2.9 nm3 <br /> N03 (ppm)~ 4 4 <br /> Available P (p.p.m.)5 l0 6 <br /> K (ppm)5 250 114 <br /> Ca (meq 1'x)6 5 18 <br />. Mg (meq 1~~)6 2 15 <br /> Texture Clay loam Clay <br /> Sand (~) 18 31 <br /> Silt (~) 31 39 <br /> Clay (~} 52 30 <br />Values are the means of 12 soil samples and 16 spoil - <br />samples. <br />zwalkley-Black method. <br />3Not measured. <br />°Chromotropic acid method. <br />SAmmonium bicarbonate extract. <br />bsaturation extract. <br />C~ <br />