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<br />~_ <br />WINDBREAK SUITABILITY GROUPS <br />SOIL DESCRIPTION <br />GROUP <br />1 Loamy soils (<35o clay content) that are subject to frequent <br />flooding or seasonal high water tables; in the upper 12 <br />inches they lack free carbonates, have a pH less than 7.8 <br />and are non-saline. <br />1K Loamy soils (<35% clay content) that are subject to frequent <br />flooding or seasonal high water table; in the upper 12 <br />inches they have free carbonates, have a pH of 7.8 to 9.0, <br />or have an electriacl conductivity (EC) of less than <br />4 mmhos/cm. <br />2K Artificially drained phases of very poorly and poorly <br />drained soils; in the upper 12 inches they have free <br />carbonates, have a pH of 7.8 to 9.0 or have an EC of less <br />than 4 mmhos/cm. <br />'~3 Moderately well and well drained loamy soils («5°c clay <br />_. content) and clayey soils with a loamy surface mantle <br />greater than 20 inches with high available water capacities <br />(AWC 7.5"); in the upper 12 inches they lac}: free <br />carbonates, have a piI less than 7.8 and are non-saline. <br />4C Somewhat poorly, moderatley well, and well drained soils <br />with greater than 35o clay content throughout when mixed to <br />8 inches. <br />4L Somewhat poorly, moderately well, and well drained clayey <br />soils with a 4-to-6 inch loamy surface mantel. <br />`~5 toderately well and well drained loamy and loamy-skeletal <br />soils with moderate and moderately high available water <br />capacities (AWC 3.75 to 7.5"); in the upper 12 inches they <br />lack free-carbonates, have a pH less than 7.8, and are <br />non-saline. <br />5K Moderately well and well drained loamy and loamy-skeletal <br />soils with modreate available water capacities (AWC 5.0 to <br />7.5"); in the upper 12 inches they have free carbonates, <br />have a pH of 7.8 to 9.0, or have an EC of less than <br />~, mmhos/cm. <br />~~ <br />TGN ;'327 7 SCS, COLORTDO, OCTOIIER, 1992 <br />