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Particle- % cloy, silt and sand ASA Mono. No. 9, Pt. I, Method <br />size (43-5), pp. 562-566. <br />analysis <br />Saturation USDA Handbook 60, Methods (270) <br />and (27b), p. 107. <br />(I) Analysis used whenever pyrites were visible in the sample, the <br />material was carbonaceous or the pH is 5.0. <br />(2) Where sodium-absorption-ratio (SAR) exceeded 10. <br /> <br />_~ <br />2.2-10 <br />