Soil survey of Thurston County, Nebraska (Google eBook)
U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1972 - 64 pagine
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11 percent slopes 60 inches Albaton alluvium available water capacity big bluestem bottom lands breaks to weak Capability unit Clayey windbreak suitability concerns of management Crofton crops commonly grown cultivated dark brown 10YR dark gray dark grayish brown drainage drainageways Entisols erodibility of slopes erosion Fair to poor feet firm when moist flooding friable when moist frost action grayish-brown 10YR hard when dry horizon ranges inches thick indiangrass Lamo light silty clay Limy Upland little bluestem loess maintaining fertility mapping are small mapping unit McPaul medium Missouri River Mollisols Monona silt loam Moody silty clay Moody soils mottles nearly level Nora silt loam Nora soils Onawa plants Representative profile sandy loam silty clay loam Silty to Clayey small areas smooth boundary soft when dry soil in mapping soils formed strongly calcareous structure that breaks subangular blocky structure subsoil surface layer switchgrass texture Thurston County water table wildlife windbreak suitability group
Pagina 28 - Class VI soils have severe limitations that make them generally unsuited to cultivation and limit their use largely to pasture or range, woodland, or wildlife food and cover.
Pagina 2 - Soils that have profiles almost alike make up a soil series. Except for different texture in the surface layer, all the soils of one series have major horizons that are similar in thickness, arrangement, and other important characteristics. Each soil series is named for a town or other geographic feature near the place where a soil of that series was first observed and mapped.
Pagina 28 - ... 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 of the soils; does not take into consideration possible but unlikely major reclamation projects; and does not apply to rice, cranberries, horticultural crops, or other crops requiring special management.
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 59 - ... in developing rural areas; in engineering work; and in many other ways. Soils are placed in broad classes to facilitate study and comparison in large areas, such as countries and continents.
Pagina 2 - Holdrege series. After a guide for classifying and naming the soils had been worked out, the soil scientists drew the boundaries of the individual soils on aerial photographs. These photographs show woodlands, buildings, field borders, trees, and other details that help in drawing boundaries accurately. The soil map at the back of this publication was prepared from aerial photographs.
Pagina 64 - Profile, soil. A vertical section of the soil through all its horizons and extending into the parent material. Reaction, soil. The degree of acidity or alkalinity of a soil, expressed in pH values. A soil that tests to pH 7.0 is precisely neutral in reaction because it is neither acid nor alkaline. An acid, or "sour," soil is one that gives an acid reaction ; an alkaline soil is one that is alkaline in reaction.