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History Of Soil Science
The early concepts of soil were based on ideas developed by a German chemist, Justus von Liebig (1803–1873), and modified and refined by agricultural scientists who worked on samples of soil in laboratories, greenhouses, and on small field plots. The soils were rarely examined below the depth of normal tillage. These chemists held the "balance-sheet" theory of plant nutrition. Soil was considered a more or less static storage bin for plant nutrients—the soils could be used and replaced. This concept still has value when applied within the framework of modern soil science, although a useful understanding of soils goes beyond the removal of nutrients from soil by harvested crops and their return in manure, lime, and fertilizer. The early geologists generally accepted the balance-sheet theory of soil fertility and applied it within the framework of their own discipline. They described soil as disintegrated rock of various sorts—granite, sandstone, glacial till, and the like. They ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil
Soil, also commonly referred to as earth, is a mixture of organic matter, minerals, gases, water, and organisms that together support the life of plants and soil organisms. Some scientific definitions distinguish dirt from ''soil'' by restricting the former term specifically to displaced soil. Soil consists of a solid collection of minerals and organic matter (the soil matrix), as well as a porous phase that holds gases (the soil atmosphere) and water (the soil solution). Accordingly, soil is a three- state system of solids, liquids, and gases. Soil is a product of several factors: the influence of climate, relief (elevation, orientation, and slope of terrain), organisms, and the soil's parent materials (original minerals) interacting over time. It continually undergoes development by way of numerous physical, chemical and biological processes, which include weathering with associated erosion. Given its complexity and strong internal connectedness, soil ecologists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian School Of Soil Science
Russian(s) may refer to: *Russians (), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *A citizen of Russia *Russian language, the most widely spoken of the Slavic languages *''The Russians'', a book by Hedrick Smith *Russian (comics), fictional Marvel Comics supervillain from ''The Punisher'' series *Russian (solitaire), a card game * "Russians" (song), from the album ''The Dream of the Blue Turtles'' by Sting *"Russian", from the album ''Tubular Bells 2003'' by Mike Oldfield *"Russian", from the album '' '' by Caravan Palace *Nik Russian, the perpetrator of a con committed in 2002 See also * *Russia (other) *Rus (other) *Rossiysky (other) Rossiysky (masculine), Rossiyskaya (feminine), or Rossiyskoye (neuter), all meaning ''Russian Federation, Russian'', may refer to: *Rossiysky, Orenburg Oblast, a rural locality (a settlement) in Orenburg Oblast, Russia *Rossiysky, Rostov Oblast, a r ... * Russian River ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedogenesis
Soil formation, also known as pedogenesis, is the process of soil genesis as regulated by the effects of place, environment, and history. Biogeochemical processes act to both create and destroy order (anisotropy) within soils. These alterations lead to the development of layers, termed soil horizons, distinguished by differences in color, structure, texture, and chemistry. These features occur in patterns of soil type distribution, forming in response to differences in soil forming factors. Pedogenesis is studied as a branch of pedology, the study of soil in its natural environment. Other branches of pedology are the study of soil morphology and soil classification. The study of pedogenesis is important to understanding soil distribution patterns in current ( soil geography) and past ( paleopedology) geologic periods. Overview Soil develops through a series of changes. The starting point is weathering of freshly accumulated parent material. A variety of soil microbes (ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioturbation
Bioturbation is defined as the reworking of soils and sediments by animals or plants. It includes burrowing, ingestion, and defecation of sediment grains. Bioturbating activities have a profound effect on the environment and are thought to be a primary driver of biodiversity. The formal study of bioturbation began in the 1800s by Charles Darwin experimenting in his garden. The disruption of aquatic sediments and terrestrial soils through bioturbating activities provides significant ecosystem services. These include the alteration of nutrients in aquatic sediment and overlying water, shelter to other species in the form of burrows in terrestrial and water ecosystems, and soil production on land.Shaler, N. S., 1891, The origin and nature of soils, in Powell, J. W., ed., USGS 12th Annual report 1890–1891: Washington, D.C., Government Printing Office, p. 213-45. Bioturbators are deemed ecosystem engineers because they alter resource availability to other species through the physica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Darwin
Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English Natural history#Before 1900, naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all species of life have descended from a Common descent, common ancestor is now generally accepted and considered a fundamental scientific concept. In a joint presentation with Alfred Russel Wallace, he introduced his scientific theory that this Phylogenetics, branching pattern of evolution resulted from a process he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding.. Darwin has been described as one of the most influential figures in human history and was honoured by Burials and memorials in Westminster Abbey, burial in Westminster Abbey. Darwin's early interest in nature led him to neglect his medical education at the University of Edinburgh Medical Schoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guy D
Guy or GUY may refer to: Personal names * Guy (given name) * Guy (surname) * That Guy (...), the New Zealand street performer Leigh Hart Places * Guy, Alberta, a Canadian hamlet * Guy, Arkansas, US, a city * Guy, Indiana, US, an unincorporated community * Guy, Kentucky, US, an unincorporated community * Guy, Texas, US, an unincorporated community * Guy Street, Montreal, Canada Arts and entertainment Films * ''Guy'' (1996 film), an American film starring Vincent D'Onofrio * ''Guy'' (2018 film), a French film starring Alex Lutz Music * Guy (band), an American R&B group ** ''Guy'' (Guy album), 1988 * Guy (Jayda G album), 2023 * " G.U.Y.", a 2014 song by Lady Gaga from the album ''Artpop'' Transport * Guy (sailing), rope to control a spinnaker on a sailboat * Air Guyane Express, ICAO code GUY * Guy Motors, a former British bus and truck builder * ''Guy'' (ship, 1933), see Boats of the Mackenzie River watershed * ''Guy'' (ship, 1961), see Boats of the Mac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil Biology
Soil biology is the study of microbial and faunal activity and ecology in soil. Soil life, soil biota, soil fauna, or edaphon is a collective term that encompasses all organisms that spend a significant portion of their life cycle within a soil profile, or at the soil-litter interface. These organisms include earthworms, nematodes, protozoa, fungi, bacteria, different arthropods, as well as some reptiles (such as snakes), and species of burrowing mammals like gophers, moles and prairie dogs. Soil biology plays a vital role in determining many soil characteristics. The decomposition of organic matter by soil organisms has an immense influence on soil fertility, plant growth, soil structure, and carbon storage. As a relatively new science, much remains unknown about soil biology and its effect on soil ecosystems. Overview The soil is home to a large proportion of the world's biodiversity. The links between soil organisms and soil functions are complex. The interconnect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Jenny (pedologist)
Hans Jenny (7 February 1899 – 9 January 1992) was a Swiss-born soil scientist and expert on pedology (the study of soil in its natural environment), particularly the processes of soil formation. He served as 1949 President of the Soil Science Society of America. Overview Hans Jenny was born in Basel, Switzerland. He earned a diploma in agriculture from the Swiss Federal Institute of Technology (ETH Zurich) in 1922, and a D. Sc. degree in 1927 for a thesis on ion exchange reactions. Following an appointment at the University of Missouri, he joined the faculty of the University of California at Berkeley in 1936. International recognition came to Jenny after the 1941 publication of ''Factors of Soil Formation: A System of Quantitative Pedology''. His synthesis of field studies with the abstract formalism of physical chemistry set down the generic mathematical relationship that connects the observed properties of soil with the independent factors that determine the process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Curtis F
Curtis or Curtiss is a common English given name and surname of Anglo-Norman origin, deriving from the Old French ''curteis'' (Modern French">-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ... ''curteis'' (Modern French ''courtois'') which was in turn derived from Latin ''cohors''. Nicknames include Curt, Curty and Curtie. The name means "polite, courteous, or well-bred". It is a compound of ''curt-'' "court" and ''-eis'' "-ish". The spelling ''u'' to render in Old French was mainly Anglo-Norman and Norman, when the spelling ''o'' was the usual Parisian French one, Modern French ''ou'' ''-eis'' is the Old French suffix for ''-ois'', Western French (including Anglo-Norman) keeps ''-eis'', simplified to ''-is'' in English. The word ''court'' shares the same etymology but retains a Modern French spelling, after the orthography had changed. It was brought to England (and subsequently, the rest of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil Morphology
Soil morphology is the branch of soil science dedicated to the technical description of soil, particularly Physical properties of soil, physical properties including texture, color, structure, and consistence. Morphological evaluations of soil are typically performed in the field on a soil profile containing multiple Soil horizon, horizons. Along with soil formation and soil classification, soil morphology is considered part of pedology, one of the central disciplines of soil science. Background Since the Neolithic Revolution, origin of agriculture, humans have understood that soils contain different properties which affect their ability to grow crops. However, soil science did not become its own scientific discipline until the 19th century, and even then early soil scientists were broadly grouped as either "agro-chemists" or "agro-geologists" due to the enduring strong ties of soil to agriculture. These agro-geologists examined soils in natural settings and were the first to sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasily V
Vasili, Vasily, Vasilii or Vasiliy ( Russian: Василий) is a Russian masculine given name of Greek origin and corresponds to '' Basil''. It may refer to: * Vasily I of Moscow Grand Prince from 1389–1425 * Vasily II of Moscow Grand Prince from 1425–1462 *Vasili III of Russia Grand Prince from 1505–1533 * Vasili IV of Russia Tsar from 1606–1610 * Basil Fool for Christ (1469–1557), also known as Saint Basil, or Vasily Blazhenny * Vasily Alekseyev (1942–2011), Soviet weightlifter * Vasily Arkhipov (1926–1998), Soviet Naval officer in the Cuban Missile Crisis * Vasily Boldyrev (1875–1933), Russian general * Vasily Chapayev (1887–1969), Russian Army commander * Vasily Chuikov (1900–1982), Soviet marshal * Vasily Degtyaryov (1880–1949), Russian weapons designer and Major General * Vasily Dzhugashvili (1921–1962), Stalin's son * Vasili Golovachov (born 1948), Russian science fiction author * Vasily Grossman (1905–1964), Soviet writer and journalist * Vasily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Justus Von Liebig
Justus ''Freiherr'' von Liebig (12 May 1803 – 18 April 1873) was a Germans, German scientist who made major contributions to the theory, practice, and pedagogy of chemistry, as well as to agricultural and biology, biological chemistry; he is considered one of the principal founders of organic chemistry. As a professor at the University of Giessen, he devised the modern laboratory-oriented teaching method, and for such innovations, he is regarded as one of the most outstanding chemistry teachers of all time. He has been described as the "father of the fertilizer industry" for his emphasis on nitrogen and minerals as essential plant nutrients, and his popularization of the law of the minimum, which states that plant growth is limited by the scarcest nutrient resource, rather than the total amount of resources available. He also developed a manufacturing process for Meat extract, beef extracts, and with his consent a company, called Liebig Extract of Meat Company, was founded to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
