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ABSTRACT
Studies with 33 soils selected to obtain a wide range in properties showed that the surface area values obtained by an ethylene glycol monoethyl ether (EGME) procedure that omitted the customary pretreatments to remove organic matter and saturate the soil sample with Ca2+ were similar to, and very highly significantly correlated with, the values obtained when these time-consuming pretreatments were included. The surface area values obtained by the simplified EGME procedure were very highly significantly correlated with the clay contents and cation-exchange capacities of the soils studied.
1 Journal Paper no. J-9444 of the Iowa Agric. and Home Econ. Exp. Stn., Ames, IA 50011. Project 2096. This work was supported in part by the U.S. Dep. of Energy under Contract no. EY-76-S-02-2530.
2 Formerly Research Associate, presently Assistant Professor, Southeastern Branch Agric. Stn., New Mexico State Univ., Artesia, NM 88210, and Professor, respectively, Dep. of Agronomy, Iowa State Univ., Ames, IA 50011.
Received for publication February 21, 1979. Accepted for publication April 16, 1979.
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