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<br />deep, medium-textured, mOderately permeable soils <br />consisting of six to 12 inches of sandy loams over heavy <br />clay sub-soils, these soils absorb water more rapirl1y <br />than do the "tight" lands and have a less favorable <br />water-retention capacity of 1.5 to 2.0 inches of <br />available water per foot of soil depth. <br />(D) -- sandy lands, generally classified as Brownfie1d- <br />Tivoli sandy soils, predominantly deep, coarse-tex- <br />tured moderately permeable soils with occasional dune- <br />sand (sand hills) areas, these soils absorb water rapidly <br />and have lower retention capacity than do soils described <br />as Band C above. <br />Generally, from north to south. as Map IV-2 portrays, the <br />soils of Hale and Floyd Counties are B-type tight soils, ideal for <br />irrigation crops with relatively heavy water-using plant varieties, <br />such as corn and grain sorghums, while soils of Lubbock, Hockley, <br />Lynn and much of Lamb and Crosby Counties are the in-between mix <br />of hard 10ams and sands, desirable for irrigation but suitable for <br />dry1and cropping as well. The really coarse-textured sandy soils <br />which predominate in Terry County are more suitable for dryland <br />and drought tolerant varieties but less suitable for water- <br />efficient irrigation because of poor water-retention capacity. <br />To the casual observer, the appearance of all of these types <br />is the same. However, the presence of more silty-clay loams to the <br />north and more sandy loams to the south is cruci~.l to crOflfling <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />- <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />. <br />. <br /> <br />IV-18 <br /> <br />I <br /> <br />Arthur 0 Litlle.lnc I <br />