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Custom Soil Resource Report <br /> Complex slope <br /> Irregular or variable slope. Planning or establishing terraces, diversions, and <br /> other water-control structures on a complex slope is difficult. <br /> Complex, soil <br /> A map unit of two or more kinds of soil or miscellaneous areas in such an <br /> intricate pattern or so small in area that it is not practical to map them <br /> separately at the selected scale of mapping. The pattern and proportion of the <br /> soils or miscellaneous areas are somewhat similar in all areas. <br /> Concretions <br /> See Redoximorphic features. <br /> Conglomerate <br /> A coarse grained, clastic sedimentary rock composed of rounded or subangular <br /> rock fragments more than 2 millimeters in diameter. It commonly has a matrix of <br /> sand and finer textured material. Conglomerate is the consolidated equivalent <br /> of gravel. <br /> Conservation cropping system <br /> Growing crops in combination with needed cultural and management practices. <br /> In a good conservation cropping system, the soil-improving crops and practices <br /> more than offset the effects of the soil-depleting crops and practices. Cropping <br /> systems are needed on all tilled soils. Soil-improving practices in a conservation <br /> cropping system include the use of rotations that contain grasses and legumes <br /> and the return of crop residue to the soil. Other practices include the use of <br /> green manure crops of grasses and legumes, proper tillage, adequate <br /> fertilization, and weed and pest control. <br /> Conservation tillage <br /> A tillage system that does not invert the soil and that leaves a protective amount <br /> of crop residue on the surface throughout the year. <br /> Consistence, soil <br /> Refers to the degree of cohesion and adhesion of soil material and its <br /> resistance to deformation when ruptured. Consistence includes resistance of <br /> soil material to rupture and to penetration; plasticity, toughness, and stickiness <br /> of puddled soil material; and the manner in which the soil material behaves <br /> when subject to compression. Terms describing consistence are defined in the <br /> "Soil Survey Manual." <br /> Contour striperopping <br /> Growing crops in strips that follow the contour. Strips of grass or close-growing <br /> crops are alternated with strips of clean-tilled crops or summer fallow. <br /> Control section <br /> The part of the soil on which classification is based. The thickness varies <br /> among different kinds of soil, but for many it is that part of the soil profile <br /> between depths of 10 inches and 40 or 80 inches. <br /> 38 <br />