In a unanimous decision, handed down last month, the UK's highest court ruled that the meaning of 'highway' was not limited to the "surface and top two spits of subsoil" definition set out in historic case law. Soil is not as solid as rock. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus. subsoil. The majority of subsoil is made up from materials that have undergone the leaching process. Source for information on subsoil: The Oxford Pocket Dictionary of Current English dictionary. Although by no means sterile, subsoil is relatively barren in terms of soil organisms compared to humus-rich topsoil. 3. Seventeen years after a single full-field compaction action, crop and nitrogen yield losses can still be significant on the compacted sites (Figure 7). Humus remains and clay accumulate in subsoil, but the teeming macroscopic and microscopic organisms that make the topsoil rich with organic matter spend little time in the subsoil layer. Term. anything of immense size and power. Soil Culture J. H. Walden Often where lime has been used in excess, it has sunk to the subsoil, where it remains inactive. ( ˈsʌbˌsɔɪl) n. (Geological Science) a. The soil is a natural medium that acts as a basement for all other materials and living entities. Subsoil is an essential part of most soil profiles, providing moisture storage and reducing the rate of water run-off. Directly beneath the surface soil (topsoil) lies a layer known as Subsoil. Updates? power or ability to act or to influence people, events, decisions, etc. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. The Company fulfils State orders for exploration of oil and gas deposits and other mineral resources; cooperates actively with individual customers. Below the subsoil is a layer of partially … (Agriculture) ( tr) to plough (land) to a depth below the normal ploughing level and so break up the subsoil. Definition. Learn more. • Deep ploughing puts subsoil on top and buries the living topsoil below the optimum depth. ( as modifier ): a subsoil plough. Also called: undersoil. Get the timing right. It often lacks the organic matter and humus content of topsoil. Supporting users have an ad free experience! Amelioration of subsoil compaction is much more expensive and less effective than loosening compacted topsoils. This article was most recently revised and updated by, https://www.britannica.com/science/subsoil. Level. Subsoil is the layer of soil under the topsoil on the surface of the ground. verb. 8th Grade. vb. It is the weathered soil layer extending between the natural topsoil and the unweathered basal layer (geological parent material) below, or similar material on which topsoil can be spread. 05/05/2012. Corrections? Subsoil - Subsoil is considered the "B" horizon. b. Also called: undersoil the layer of soil beneath the surface soil and overlying the bedrock. ( as modifier ): a subsoil plough. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. (transitive) to plough (land) to a depth below the normal ploughing level and so break up the subsoil. Subsoil is the layer (or stratum) of soil immediately underneath the surface topsoil.. Most people chose this as the best definition of subsoil: The layer or bed of earth... See the dictionary meaning, pronunciation, and sentence examples. sub‧soil /ˈsʌbsɔɪl/ noun [ uncountable] HEG TAS. Subsoil definition is - the stratum of weathered material that underlies the surface soil. Minerals are bits of rock , and organic material is the remains of living things that have died. Thus it is worthwhile to give your soil the time and attention it needs. Stripping topsoil while clearing land for crop growth or commercial development exposes the subsoil and increases the rate of erosion of soil minerals. Our editors will review what you’ve submitted and determine whether to revise the article. translation and definition "subsoil explorations", Dictionary English-English online. The state of your soil directly correlates with that which you are able to grow from it. Coarse sand, the other ingredient in most of these materials, is also found in subsoil. Subsoiling is usually performed with a chisel-like device that is pulled through the soil. Soil is one of the principal substrata of life on Earth, serving as a reservoir of water and nutrients, as a medium for the filtration and breakdown of injurious wastes, and as a participant in the cycling of carbon and other elements through the global ecosystem. The definition of subsoil . The B-horizon of soil. It also specifies requirements for sampling and analysing subsoil. [home, info] subsoil: The Wordsmyth English Dictionary-Thesaurus [home, info] subsoil: Infoplease Dictionary [home, info] subsoil: Dictionary.com [home, info] subsoil: Online Etymology Dictionary [home, info] subsoil: UltraLingua English Dictionary … ... Subsoil: Definition. We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. Humus remains and clay accumulate in subsoil, but the teeming macroscopic and microscopic organisms that make the topsoil rich with organic matter spend little time in the subsoil layer. The primary criterion is the need to support abutments on relatively flexible piles. Parent material - The parent material layer is considered the "C" horizon. TAKE THE QUIZ TO FIND OUT subsoil In-row tillage methods for subsoil amendment and starter fertilizer application to conservation tilled-grain sorghum. subsoil. Common crawl. Organic matter varies in quantity on different soils. b. Science. (Agriculture) ( tr) to plough (land) to a depth below the normal ploughing level and so break up the subsoil. subsoil. Source for information on subsoiling: A Dictionary of Earth Sciences dictionary. ( ˈsʌbˌsɔɪl) n. (Geological Science) a. From Longman Dictionary of Contemporary English subsoil sub‧soil / ˈsʌbsɔɪl / noun [uncountable] HEG TAS the layer of soil between the ground’s surface and the lower layer of hard rock Examples from the Corpus subsoil • The type of subsoil upon which the foundations are built is a very influential factor. Timing is everything with subsoiling. Subsoil, Layer (stratum) of earth immediately below the surface soil, consisting predominantly of minerals and leached materials such as iron and aluminum compounds. Subsoil definition, the bed or stratum of earth or earthy material immediately under the surface soil. It specifies requirements for multipurpose subsoil which is fit for the majority of needs and also specific purpose subsoils that are acidic or calcareous for specialist use where acidic or calcareous soil profiles are required. Soil Horizon: Definition. ( as modifier ) a subsoil plough. Soil is a mixture of minerals and organic material that covers much of Earth’s surface. Topsoil is composed of mineral particles, organic matter, water, and air. From Cambridge English Corpus The soil type was a sandy-loam with a surface … Below the subsoil is a layer of partially disintegrated rock, and underlying bedrock. Topsoil definition is - surface soil usually including the organic layer in which plants have most of their roots and which the farmer turns over in plowing. Clay-based subsoil has been the primary source of material for adobe, cob, rammed earth, wattle and daub, and other earthen construction methods for millennia. subsoiling The breaking up of subsoils, usually because they are compacted, without inverting them. Chemical decomposition in which a compound is split into other compounds by reacting with water. Topsoil is the upper, outermost layer of soil, usually the top 5–10 inches (13–25 cm).It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biological soil activity occurs. Subsoil consists of a variable mixture of small particles such as sand, silt and/or clay. Avoidance of compaction in the subsoil is therefore a much greater need than in the topsoil. Let us know if you have suggestions to improve this article (requires login). The Elements of Agriculture George E. Waring "Chemical Factors Affecting Root Growth in Subsoil Horizons of Coastal Plain Soils", https://en.wikipedia.org/w/index.php?title=Subsoil&oldid=975417571, Pages containing links to subscription-only content, Creative Commons Attribution-ShareAlike License, This page was last edited on 28 August 2020, at 11:38. soil / ˈsəbˌsoil/ • n. the soil lying immediately under the surface soil. b. 2. the layer of soil beneath the surface soil and overlying the bedrock. Subsoil is the layer of soil under the topsoil on the surface of the ground. [tr.] a. One way to invigorate soil is by subsoiling with a low disturbance tool. Subsoil condition is an important consideration in the feasibility of the integral arrangement of a structure. … Most people chose this as the best definition of subsoils: Plural form of subsoil.... See the dictionary meaning, pronunciation, and sentence examples. 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