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11 percent slopes 60 inches AASHTO acid silt loam acres alfalfa alluvium available water capacity Big Blue River Capability units capacity is high clayey claypan consists of deep content is moderate Corn Crete Crete soils crop residue depth drainage drainageways dryland eroded fertility is high Fillmore soils flooding friable frost action Geary soils gently sloping grain sorghum grayish brown 10YR Hastings silt loam Hastings soils Hobbs soils indiangrass liquid limit loess mapping unit material is silt medium acid moderately slow moist Mollisols natural fertility nearly level Organic-matter content parent material percent slopes Permeability is moderate ponding poorly drained readily to plants Silty alluvial land silty clay loam silty soil slightly hard smooth boundary soil associations soil in mapping soil material soil series soil survey soils absorb moisture soils on uplands sorghum stream terraces subsoil is silty surface layer Tilth tion underlying material Water erosion windbreak suitability group York County
Pagina 52 - Individual mineral particles in a soil that range in diameter from the upper limit of clay (0.002 millimeter) to the lower limit of very fine sand (0.05 millimeter). Soil of the silt textural class is 80 percent or more silt and less than 12 percent clay.
Pagina 19 - III soils have severe limitations that reduce the choice of plants or require special conservation practices, or both. Class IV soils have very severe limitations that restrict the choice of plants , require very careful management, or both.
Pagina 19 - The soils are grouped according to their limitations when used for field crops, the risk of damage when they are used, and the way they respond to treatment. The grouping does not take into account major and generally expensive landforming that would change slope, depth, or other characteristics...
Pagina 1 - County, where they are located, and how they can be used. The soil scientists went into the county knowing they likely would find many soils they had already seen and perhaps some they had not.
Pagina 2 - ... classified by soil series. These places are shown on the soil map and are described in the survey, but they are called land types and are given descriptive names.
Pagina 51 - Clay. As a soil separate, the mineral soil particles less than 0.002 millimeter in diameter. As a soil textural class, soil material that is 40 percent or more clay, less than 45 percent sand, and less than 40 percent silt.
Pagina 52 - Texture, soil. The relative proportions of sand, silt, and clay particles in a mass of soil. The basic textural classes, in order of increasing proportion of fine particles, are sand, loamy sand, sandy loam, loam, silt loam, silt, sandy clay loam, clay loam, silty clay loam, sandy clay, silty clay, and clay. The sand, loamy sand, and sandy loam classes may be further divided by specifying "coarse," "fine,
Pagina 43 - AASHO procedure, the fine material is analyzed by the hydrometer method and the various grain-size fractions are calculated on the basis of all the material, including that coarser than 2 millimeters in diameter. In the SCS soil survey procedure, the fine material is analyzed by the pipette method and the material coarser than 2 millimeters in diameter is excluded from calculations of grain-size fractions.
Pagina 52 - Soil. A natural, three-dimensional body on the earth's surface that supports plants and that has properties resulting from the integrated effect of climate and living matter acting on earthy parent material, as conditioned by relief over periods of time. Solum. The upper part of a soil profile, above the parent material, in which the processes of soil formation are active. The solum in mature soil includes the A and В horizons.