the branch of agriculture that studies soils; soil science. NRCS Home | USDA.gov | Site Map | Civil Rights | FOIA | Plain Writing | Accessibility Statement, Policy and Links| Non-Discrimination Statement | Information Quality | USA.gov | WhiteHouse.gov if(imgMarginRight.indexOf("px") > 0){ The ideal range for most plants is between 6–7. It is a mixture of many different things including rock, minerals, water and air.Soil also has living things and dead things in it. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. the branch of pedology that studies the soil conditions of past geologic ages. The soil has several layers - Bedrock, Parent rock, Subsoil, Topsoil. })*/ soil - (i) The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants. For purposes of classification, the lower boundary of soil is arbitrarily set at 200 cm. imgWidth = imgWidth.replace("px",""); } Clay soil is a very dense type of soil. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. The cricket pitch is made from clay soil. Commonly, soil grades at its lower boundary to hard rock or to earthy materials virtually devoid of animals, roots, or other marks of biological activity. if(imgWidth.indexOf("px") > 0){ //, Enter Keyword, Phrase, or Text to search the site. This provides a safer playing surface for fielders and better drainage if … Soil is one of the three major natural resources, alongside air and water. Aloe vera grows best in sandy soil that drains well. Let us have a detailed look at the causes, effects and prevention of soil erosion. dom.query(this).attr("alt") : dom.query(this).attr("title").trim(); "none" : dom_i.query(this).css("float").trim(); imgMarginRight = imgMarginRight.replace("px",""); Its particles are closely packed together and clay generally does not allow water to drain through. if(imgMarginTop.indexOf("px") > 0){ if(imgMarginLeft.indexOf("px") > 0){ Soil is the organic and inorganic material on the surface of the earth that provides the medium for plant growth. The loose top layer of the Earth's surface, consisting of rock and mineral particles mixed with decayed organic matter (known as humus). Except for occasional rocks and gravel, sand is the largest grain of solid matter that's in soil; silt particles are smaller. var imgAlt = dom_i.query(this).attr("alt") == undefined ? '' if (imgTitle != '') { This type of soil slowly releases air and allows water to seep down into it. the branch of geology concerned with the adaptability of land to agriculture, soil quality, etc. What is Soil? Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Soil pH is measured on a scale of 1-14, with 7 as the neutral mark. 300 : dom_i.query(this).css("width").trim(); soil - Soil is a natural body comprised of solids (minerals and organic matter), liquid, and gases that occurs on the land surface, occupies space, and is characterized by one or both of the following: horizons, or layers, that are distinguishable from the initial material as a result of additions, losses, transfers, and transformations of energy and matter or the ability to support rooted plants in a natural environment. imgMarginBottom = imgMarginBottom.replace("px",""); Soil definition is - to stain or defile morally : corrupt. 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