NOTOC Image Soilcontam.JPG thumb 280px Excavation showing soilcontamination at a disused gasworks. Soilcontamination or soil pollution is caused by the presence of xenobiotic human made chemicals or other alteration in the natural soil environment. This type of contamination typically arises from the failure ... and intensities of chemical usage. The concern over soilcontamination stems primarily from health risks, from direct contact with the contaminated soil, vapors from the contaminants, and from secondary contamination of water supplies within and underlying the soil ref Risk Assessment Guidance ... very likely to be the next generation of new soilcontamination cases. The immense and sustained ... of soilcontamination into groundwater aquifers used for human consumption, sometimes in areas ... from exposure to soilcontamination vary greatly depending on pollutant type, pathway of attack ... single en 724 Facing up to invisible pollution Article on soilcontamination in China ref Ecosystem ... of species. Effects occur to agricultural lands which have certain types of soilcontamination ... soil chemicals and also apply computer model s GIS in Environmental Contamination for analyzing ... Society Pollution DEFAULTSORT SoilContamination Category Soilcontamination Category Environmental soil science Contamination, soil Category Environmental chemistry Category Environmental issues ... of industrial wastes to the soil. The most common chemicals involved are petroleum hydrocarbons , lead ... 20450 ref . Mapping of contaminated soil sites and the resulting cleanup are time consuming and expensive ..., and GIS in Environmental Contamination , as well as an appreciation of the history of industrial ... soil pollution. The State Environmental Protection Administration believes it to be a threat ... of contamination or pollution typically arises from failure due to corrosion of underground storage ... of wastes from landfills or direct discharge of industrial wastes to the soil. The most common ... more details
other uses Contamination disambiguation Contamination is the presence of a minor and unwanted constituent contaminant in material , physical body , natural environment , at a wiktionary Workplace workplace , etc. Specifics Contamination also has more specific meanings in science In chemistry , the term usually describes a single constituent, but in specialized fields the term can also mean chemical mixtures, even up to the level of cellular materials. All chemicals contain some level of contamination. Contamination may be recognized or not and may become an issue if the contaminated chemical is mixed with other chemicals or mixtures and causes additional chemical reactions. The additional chemical reactions can sometimes be beneficial, in which case the label contaminant is replaced with reactant or catalyst . If the additional reactions are detrimental, other terms are often applied such as toxin , poison or pollutant depending on the chemistry involved. A major fraction of chemistry is involved with identifying, isolating, and studying contaminants. In environmental chemistry the term is in some cases is virtually equivalent to pollution , where the main interest is the harm done on a large scale to humans or to organisms or environments that are important to humans. In radiation protection the radioactive contamination is radioactive substances on surfaces, or within solids, liquids or gases including the human body , where their presence is unintended or undesirable, or the process ... on a surface or on a unit area of a surface . Contamination does not include residual radioactive material ... radioactive contamination may have a connotation that is not intended. The term radioactive contamination ... chemistry , the term contamination is used to describe harmful intrusions, such as the presence .... In the biology biological sciences accidental introduction of foreign material contamination ... contamination is sometimes used to describe accidental transfers of organisms from one natural ... more details
, it degrades land when soil acidity lowers crop productivity and increases soil vulnerability to contamination ... forming nitrogenous fertilizer s and by the effects of acid precipitation . Soilcontamination at low .... Derelict soils occur where industrial contamination or other development activity damages the soil ...Other uses File Estructura suelo.jpg thumb right alt This is a diagram and related photograph of soil layers from bedrock to soil. A represents soil B represents laterite , a regolith C represents saprolite ... field in Germany File Stagnogley.JPG thumb Surface water Gley soil gley developed in glacial till , Northern Ireland Soil is a natural body consisting of layers soil horizons of primarily mineral ... and Geomorphology, 3rd Edition . New York Oxford University Press, 1999. ref In engineering , soil is referred to as regolith , or loose rock material. Strictly speaking, soil is the depth of regolith that influences and has been influenced by plant roots. Soil is composed of particles of broken Rock ... and erosion . Soil differs from its parent rock due to interactions between the lithosphere , hydrosphere ... by Ward year 2008 title Encyclopedia of soil science pages xxiv isbn 1402039948 publisher Springer ... constituents that are in solid, gaseous and aqueous states. ref Voroney, R. P., 2006. The Soil Habitat in Soil Microbiology, Ecology and Biochemistry , Eldor A. Paul ed. ISBN 0125468075 ref ref James ... content.html The Terrestrial Influence Geology and Soils ref Soil is commonly referred to as earth or dirt technically, the term dirt should be restricted to displaced soil. ref Janet Raloff. http www.sciencenews.org ? kk science view generic id 34205 title Dirt Is Not Soil Dirt Is Not Soil . ScienceNews July 17th, 2008 ref Soil forms a structure that is filled with pore spaces, and can be thought .... ref McCarty, David. 1982. Essentials of Soil Mechanics and Foundations ref Most soils have a density ... ref Little of the soil composition of planet Earth is older than the Tertiary and most no older ... more details
, and extent of seed contamination Change current seed regulations to prevent contamination Create a bank ... report on seed contamination through genetic engineering http fadr.msu.ru rodale agsieve txt vol6 ... seeds tmln&seeds genetically modified crops seeds contamination Timeline of GM seed contamination ... more details
wiktionary contaminationContamination is the presence of a minor and unwanted constituent in another substance. Contamination may also refer to Contamination film Contamination film , 1980 science fiction horror film directed by Luigi Cozzi and starring Ian McCulloch Contamination album Contamination album , 1996 album by Belgian electro industrial act Suicide Commando Contamination Private Practice , an episode of the American television series Private Practice disambiguation cs Kontaminace uk ... more details
Telluric contamination is systematic error contamination of the Astronomical spectroscopy astronomical spectra by the Earth s atmosphere . Interference with astronomical observations Most astronomical observations are conducted by measuring photon s electromagnetic waves which originate beyond the sky. The molecules in the Earth s atmosphere, however, Absorption electromagnetic radiation absorb and Emission electromagnetic radiation emit their own light, especially in the visible and infrared near IR portion of the spectrum , and any ground based observation is subject to contamination from these telluric earth originating sources. Water vapor, oxygen, and OH are some of the more important molecules in telluric contamination. Water contamination was particularly pronounced in the Mount Wilson solar Doppler measurements. Many scientific telescopes have spectrograph s, which measure photons as a function of wavelength or frequency , with typical resolution on the order of a nanometer . Spectroscopic observations can be used in a myriad of contexts, including measuring the chemical composition and physical properties of astronomical objects as well as measuring object velocities from the Doppler shift of spectral lines. Unless they are corrected for, telluric contamination can produce errors or reduce precision in such data. Telluric contamination can also be important for photometry astronomy photometric measurements. Telluric correction It is possible to correct for the effects of telluric contamination in an astronomical spectrum . This is done by preparing a telluric correction Function mathematics function , made by dividing a model spectrum of a star by an observation of an astronomical photometric standard stars . This function can then be multiplied by an astronomical observation at each wavelength point. While this method can restore the original shape of the spectrum ..., Telluric water vapor contamination of the Mount Wilson solar Doppler measurements . September 30 ... more details
Infobox Album See Wikipedia WikiProject Albums Name Contamination Type Studio Artist Suicide Commando Cover Released 1996 in music 1996 Recorded Genre Electro industrial Length 43 20 Label OffBeat Producer Johan Van Roy Reviews Last album Stored Images br 1995 This album Contamination br small 1996 Next album Construct Destruct br 1998 Contamination is a 1996 in music 1996 album by Belgian electro industrial act Suicide Commando . Track listing Fall Away See You In Hell, Part 1 & 2 Extended Mix Head Down Delusion The Face Of God Traumatize Clubmix See You In Hell Remake By Monolith Burn Baby Burn In 1997, there was a re release of Contamination with three more tracks listed called Save Me Long , Last Decision , and Murder Extended . Category Suicide Commando albums Category 1996 albums 1990s electronic album stub ... more details
Interplanetary Contamination is the hypothetical contamination of a sterilization microbiology sterile planetary body by human spacecraft , either deliberate or unintentional. This is considered a potential form of directed panspermia . Currently international agreements cover the sterility of spacecraft that leave earth. Resilience of Life in Space It is believed that the harsh environments encountered throughout the rest of the solar system so far do not seem to support complex terrestrial life however, certain extremophiles may be resilient enough to survive space travel to possibly contaminate a sterile planet or planetoid . Prevention of Contamination Galileo Spacecraft The Galileo spacecraft Galileo Spacecraft was Galileo spacecraft Galileo.27s end deliberately crashed into Jupiter at the end of the mission in order to avoid contaminating any of the moons of Jupiter . cn date November 2011 Possible Accidental Contamination Though unconfirmed, several missions which date November 2011 have left open the possibility of interplanetary contamination of the Moon , Mars , or Venus . cn date November 2011 Apollo Missions All of the manned Apollo Program Apollo Missions that Moon landing Manned Moon landings landed on the moon 11, 12, & 14 17 , leave open the possibility of the contamination of the lunar surface by the astronauts when they exited the lunar module . Surveyor 3 The Surveyor 3 moon probe, launched by NASA , may have had a camera lens contaminated by Streptococcus mitis before launch. This was discovered when the camera was returned to Earth by the Apollo 12 mission however, the time of the contamination is inconclusive and may have occurred after the camera was returned ... prior to launch. Back contamination The theoretical contamination of Earth s biosphere from ... Links GYRE.org http www.gyre.org news explore interplanetary contamination Mars Robot may have destroyed ... fear Interplanetary Contamination in new Mars missions Wired Magazine http www.popsci.com science ... more details
Contamination control is the generic term for all activities aiming to control the existence, growth and proliferation of contamination in certain areas. Contamination control may refer to the atmosphere as well as to surfaces, to particulate matter as well as to microbes and to contamination prevention as well as to decontamination Image Flooring at Carl Zeiss.JPG right thumb Contamination control ... at Alcatel , London , UK. Function The aim of all contamination control activities is to permanently ..., reducing or eradicating viable and non viable contamination for either sanitary purposes or in order ... that incorporates contamination control into its standards protocol is the cleanroom . There are many ... such as packaging areas, corridors, gowning rooms and transfer hatches incorporate strict contamination control measures in order to keep to the cleanroom standards. Contamination control is also an important ... providers, many manufacturing areas, and in electronic component assembly areas. More recently contamination ... bio security crisis management measure. Some bank s and insurance companies use contamination control ... attack. Types of contamination copy edit date October 2011 Beside of particulate matter, the most common type of contamination, ions and molecules AMC there are many types of organism that are potentially ... and inside the critical area. The effects of contaminationContamination poses a significant risk ... of contamination can quickly lead to product damage, yield reduction, product recall s and other ... due to ineffective contamination control systems. ref http www.emeraldinsight.com Insight ... the harmful effects of contamination, and many products over many industries are being recalled due to unsafe manufacturing processes. Types of contamination control Body movement causes contamination and protective clothing such as hats, cleanroom suit s and face mask s are basic forms of contamination control. Apart from people, the other common way for contamination to enter is on the wheels ... more details
Unreferenced date December 2009 Forward contamination is the contamination of other worlds with Earth Terrestrial microbes. The risk of forward contamination is twofold that human beings may accidentally seed a previously sterile world, thus creating extraterrestrials that are really of terrestrial origin and which might even make it impossible to determine whether the life later found is terrestric or local or that an actual alien biosphere could be devastated by Earth s bacteria. Forward contamination may have been demonstrated by the Myth of Streptococcus mitis on the moon apparent survival on the Moon of Streptococcus bacteria on Surveyor 3 , which is however the subject of some debate see Reports of Streptococcus mitis on the moon . Laboratory tests indicate that forward contaminant DNA can persist for considerable periods of time at the Martian surface, particularly if shielded from solar radiation. ref http adsabs.harvard.edu abs 2010cosp...38.3328F Assessment of DNA damages caused by exposure of bacterial cells and spores to the Mars surface environment . 38th COSPAR Scientific Assembly. Held 18 15 July 2010, in Bremen, Germany ref Given the impossibility of sending a bacteria free human being into space, forward contamination will remain an issue for as long as manned missions continue. Assuming a manned mission eventually reaches Mars , for example, it is inevitable that a microbial soup will be released into the environment of the red planet. See also Astrobiology Back contamination Living Interplanetary Flight Experiment Planetary protection Extraterrestrial life Panspermia References reflist DEFAULTSORT Forward Contamination Category Astrobiology Category Extraterrestrial life ... more details
Unreferenced stub auto yes date December 2009 In digital circuit s, the contamination delay is the minimum amount of time needed for the output of an electronic component s output to match input presented to it i.e. contamination delay hold time device internal I O propagation time . If there is insufficient delay from the output of one flip flop electronics flip flop to the input of the next, the input may change before the hold time has passed. Because the second flip flop is still unstable, its data would then be contaminated. Every path from an input to an output can be characterized with a particular contamination delay. Well balanced circuits will have similar speeds for all paths through a combinational stage, so the minimum propagation time is close to the maximum. This corresponding maximum time is the propagation delay . The condition of data being contaminated is called a race condition race . References 1. http www.nileshgoel.com wp content uploads 2010 02 timing note.pdf 2. http bwrc.eecs.berkeley.edu icbook Slides chapter10.ppt Compu hardware stub DEFAULTSORT Contamination Delay Category Timing in electronic circuits ... more details
these elements due to their extreme instability and radioactivity. Radioactive contamination , also called radiological contamination , is Radioactive decay radioactive substances on surfaces, or within ... to a quantity, namely the activity on a surface or on a unit area of a surface . As with other contamination , radioactive contamination refers only to the presence of the unintended or undesired radioactivity, and gives no indication of the magnitude of hazard involved. Sources of contamination Radioactive contamination is typically the result of a spill or accident during the production or use ... fallout is the distribution of radioactive contamination by a nuclear explosion . The amount of radioactive material released in an accident is called the source term . Contamination may occur ... , the material could be spread by people as they walk around. Radioactive contamination may also ... be diluted to safe concentrations. For a discussion of environmental contamination by alpha particle ... material from radioactive contamination. Contamination does not include residual radioactive ... in sealed and designated containers is not properly referred to as contamination, although the units ... of radiation dose or radionuclide contamination for reasons related to the assessment or control ... PubDetails.asp?pubId 8242 accessdate ref Measurement Radioactive contamination may exist on surfaces ... and contamination is often the job of a Certified Health Physicist . Surface contamination Surface contamination is usually expressed in units of radioactivity per unit of area. For SI , this is becquerel ... contamination may either be fixed or removable. In the case of fixed contamination, the radioactive ... area contaminated. If radioactive contamination is acute highly concentrated enough to pose a risk of radiation exposure , then we call that location a hot spot. Many instances of contamination ..., the air is contaminated, which poses an inhalation hazard. Low level contamination The hazards ... more details
Infobox film name Contamination image Alien Contamination Poster.jpg caption Theatrical release poster director Luigi Cozzi producer Charles Mancini writer Lewis Coates br Erich Tomek starring Ian McCulloch actor Ian McCulloch br Louise Marleau music Goblin band Goblin br Agostino Marangolo br Fabio Pignatelli cinematography Joseph Pinori editing Nino Baragli studio Alex Cinematografica br Barthonia Film br Lisa Film distributor The Cannon Group released Film date 1980 8 2 Do not add the US release date here, please see WP FILMRELEASE. runtime 95 minutes country Italy br West Germany language Italian Contamination also known as Alien Contamination , Contamination Alien on Earth and Toxic Spawn is a 1980 Science fiction film science fiction horror film directed by Luigi Cozzi and starring Ian McCulloch actor Ian McCulloch . ref cite book last Wingrove first David authorlink David Wingrove title Science Fiction Film Source Book publisher Longman Group Limited date 1985 page 24 ref Plot A large ship drifts into New York Harbor , seemingly abandoned. The ship is discovered to be carrying ... on Earth . ref name doc Producer Claudio Mancini wanted to use the name Contamination , which ... with Cozzi again in his 1989 opus De Profundis . ref name doc Contamination was shot in five weeks ... Recordings Act , Contamination as it is known in the United Kingdom was classed as a video nasty ... in the United States under titles Alien Contamination and Toxic Spawn , which are heavily edited ..., the film was marketed under the title Contamination Alien on Earth , which has caused some to confuse this film with the similarly titled Alien 2 Italian film Alien 2 On Earth . Contamination ... of the murderous green eggs. References reflist External links IMDb title id 00082000 title Contamination Amg movie 1505 Contamination rotten tomatoes id contamination title Contamination Category ... science fiction films fr Contamination film, 1980 no Contamination ru , 1980 ... more details
Unreferenced date March 2011 Back contamination is the informal but widely employed name for the hypothetical introduction of microbial Extraterrestrial life extraterrestrial organisms into Earth s biosphere . It is assumed that any such contact will be disruptive or at least have consequences over which human beings will have little control. Citation needed date March 2011 The threat of back contamination from the Moon was the main reason for quarantine procedures adopted for the Apollo program , up until the completion of Apollo 14 . Astronauts and lunar samples were quarantined in the Lunar Receiving Laboratory . The likelihood that a human being or any other animal could literally acquire an alien virus is effectively nil, as viruses are host specific. This does not mean that extraterrestrial microbes cannot act upon one pathogenically spores might use an organism s body as hosts, while the ingestion of bacteria in any form could produce toxic chemicals. When human beings ingest contaminated food, for example, they are not acquiring a virus in the manner of the flu but the experience may still be lethal because of toxic compounds. Further, the possibility exists that a microbe might aggressively metabolize some Earth resource were it introduced here, altering Earth s atmosphere atmospheric conditions or the water cycle . Citation needed date March 2011 See also div col cols 3 Aerobiology Astrobiology Extraterrestrial life Forward contamination Living Interplanetary Flight Experiment Panspermia Planetary protection Red rain in Kerala div col end References http www.hq.nasa.gov office pao History SP 4214 ch4 3.html NASA page on back contamination Extraterrestrial life Category Astrobiology Category Extraterrestrial life pl Kontaminacja wsteczna ro Contaminare extraterestr ... more details
Infobox Album See Wikipedia WikiProject Albums Name Cross Contamination Type Album Longtype Split album Split Artist Batmobile band Batmobile and Peter Pan Speedrock Cover Released 2008 Recorded Genre Punk rock , Psychobilly Length 27 12 Label Suburban Records Producer Reviews Chronology Batmobile band Batmobile Last album Batmobile live at the KlubFoot 1986 br 2008 This album Cross Contamination br 2008 Next album Misc Extra chronology Artist Peter Pan Speedrock Type Album Last album Pursuit Until Capture br 2007 This album Cross Contamination br 2008 Next album We Want Blood br 2010 Cross Contamination is an album by the rock bands Batmobile band Batmobile and Peter Pan Speedrock . It was released in 2008 by Suburban Records . Track listing Hellalujah Go Satan Go Killerspeed Big Toy Straight Back To Hormoneville Transsylvanian Express Dead I Want Them When They Are Dead Dynamite Shoot Shoot Mission Impossible tracks 1 5 , performed by Batmobile band Batmobile tracks 6 10 performed by Peter Pan Speedrock External links http www.peterpanspeedrock.com Official Peter Pan Speedrock website http www.batmobileforever.com Official Batmobile website Peter Pan Speedrock Category Peter Pan Speedrock albums Category 2008 albums Category Split albums ... more details
In computational chemistry , spin contamination is the artificial mixing of different electron ic Spin physics spin states. This can occur when an approximate orbital based wave function is represented in an unrestricted form that is, when the spatial parts of and spin orbital s are permitted to differ. Approximate wave functions with a high degree of spin contamination are undesirable. In particular, they are not eigenfunctions of the total spin squared operator, sup 2 sup , but can formally be expanded in terms of pure spin states of higher Multiplicity chemistry multiplicities the contaminants . Open shell wave functions Within Hartree&ndash Fock theory, the wave function is approximated ... sub N sub sub . There is no such constraint in an UHF approach. Contamination The total spin squared ... of the extent of spin contamination in the unrestricted Hartree&ndash Fock approach and is always ... unless a ROHF approach is taken. Naturally, there is no contamination if all electrons are the same spin. Also, there is often no contamination if the number of and electrons is the same. A small basis set could also constrain the wavefunction sufficiently to prevent spin contamination. Such contamination is a manifestation of the different treatment of and electrons that would ... contamination, it is far less commonly available in quantum chemistry computer programs . Given this, several approaches to remove or minimize spin contamination from UHF wave functions have been proposed ... free of contamination, dramatically improves upon the UHF approach especially in the absence of high order contamination. ref cite journal last Baker first J year 1988 title M ller&ndash Plesset ..., Richard G. A. Handy, Nicholas C. Amos, Roger D. year 1991 title Spin contamination in single determinant ... spin contamination using the Kohn Sham orbitals as if they were Hartree Fock orbitals, this is not necessarily ... fr Contamination de spin ... more details
Soil chemistry is the study of the Chemistry chemical characteristics of soil . Soil chemistry is affected by mineral composition, organic matter and Environment biophysical environmental factors. History Until the late 1960s, soil chemistry focused primarily on chemical reactions in the soil that contribute to pedogenesis or that affect plant growth. Since then, concerns have grown about environmental pollution , organic and inorganic soilcontamination and potential ecological health and environmental health risks . Consequently, the emphasis in soil chemistry has shifted from pedology and agricultural soil science to an emphasis on environmental soil science . Environmental soil chemistry A knowledge of environmental soil science environmental soil chemistry is paramount to predicting the fate, mobility and potential toxicity of contaminants in the environment. The vast majority of environmental contaminants are initially released to the soil. Once a chemical is exposed to the soil environment a myriad of chemical reaction s can occur that may increase or decrease contaminant toxicity. These reactions include adsorption desorption , Precipitation chemistry precipitation , polymerization , solvation dissolution , complexation and redox oxidation reduction . These reactions are often disregarded by scientists and engineers involved with environmental remediation . Understanding these processes enable us to better predict the fate and toxicity of contaminants and provide the knowledge to develop scientifically correct, and cost effective remediation strategies. Concepts Anion and cation exchange capacity Soil pH Mineral formation and transformation processes Clay mineralogy Sorption and Precipitation chemistry precipitation reactions in soil Redox Oxidation reduction reactions ... 2000 http www.agron.iastate.edu soilchemistry History 20of 20Soil 20Chemistry.htm The History of Soil Chemistry . Url accessed on 2006 04 11 Category Soil chemistry Soil sci stub bn ca ... more details
reclamation Flood and storm damage Contamination Sustainability of desired uses Topsoil Soil conservation ...Image Soil sci.jpg thumb Soil science is the scientific study of soil as a natural resource on the surface of the earth including pedogenesis soil formation , soil classification classification and mapping ... to the use and Soil management management of soils . ref Jackson, J. A. 1997 . Glossary of Geology ... terms which refer to branches of soil science, such as pedology soil study pedology formation, chemistry, morphology and classification of soil and edaphology influence of soil on organisms, especially plants , are used as if synonymous with soil science. The diversity of names associated with this discipline ... and the advancement of the soil sciences. Soil scientists have raised concerns about how to preserve soil and arable land in a world with a growing population, possible future water crisis , increasing ... publications sssaj articles 75 1 1 Global Prospects Rooted in Soil Science . doi 10.2136 sssaj2009.0216. ref Fields of study Soil occupies the pedosphere , one of Earth s spheres that the geosciences use to organize the Earth conceptually. This is the conceptual perspective of pedology soil study pedology and edaphology , the two main branches of soil science. Pedology is the study of soil in its natural setting. Edaphology is the study of soil in relation to soil dependent uses. Both branches apply a combination of soil physics , soil chemistry , and soil biology . Due to the numerous ..., more integrated, less soil centric concepts are also valuable. Many concepts essential to understanding soil come from individuals not identifiable strictly as soil scientists. This highlights the interdisciplinary nature of soil concepts. Research Dependence on and curiosity about soil, exploring ... avenues of soil research are compelled by a need to understand soil in the context of climate change , ref Pielke, Roger December 12, 2005 http climatesci.atmos.colostate.edu 2005 12 19 is soil an important ... more details
chemical soilcontamination . It is a component of environmental soil science . Crops and conservation ... it can also be induced by acid rain or soilcontamination from acid s or base chemistry base s. The role ... of soilcontamination remediation cannot be justified in an agricultural economic analysis, since cleanup ... contamination Soils retrogression and degradation Soil steam sterilization Surface runoff Sustainability ...Soil conservation is a set of management strategies for prevention of soil being erosion eroded from ... deposition of single crop growth. Cover crops serve the function of protecting the soil from erosion, weed establishment or excess evapotranspiration however, they may also serve vital soil chemistry ... under to augment soil nitrate s, and other plants have the ability to metabolize soil contaminants ... pruriens, Lablab purpureus and maize , Soil Biology & Biochemistry 32 2063 2077. 2000 ref Some of these same ... for erosion control and weed suppression. soil is one of the three main natural resources alongside ... Summer, Modelling Soil Erosion, Sediment Transport and Closely Related Hydrological Processes ... protection however, as long as foliage is present in the seasons of bare soil surfaces, the effect of deciduous ... soil erosion and allows the water time to settle into the soil. Practices There are also conventional ... soil erosion by water, a guide to conservation planning in the Revised Universal Soil Loss Equation ... as a result from greater soil retention. Citation needed date January 2008 There are many erosion ... is typically large scale erosion, loss of soil nutrients and sometimes total desertification ... for soil erosion prevention, by insuring any surface flows are impeded. A special form of this perimeter ... thumb right Salt deposits on the former bed of the Aral Sea Main Soil salinity control Salinity in soil ... the soil evaporates leaving the salt behind causing salinization .Salinization causes the soil structure ... , Marcel Dekker, New York 1981 ISBN 0 8247 6741 1 ref Soil salinity adversely affects the metabolism ... more details
Image Potting soil.jpg 300px right thumb A flowerpot filled with potting soil NOTOC Potting soil is a mixture ... 10&hilite 50185534se9 Oxford English Dictionary ref The most common ingredients used in potting soil ... potting soil mixtures contain particles of vermicompost , while other contain vermiculite for water retention. Most commercially available brands of potting soil have their pH fine tuned with ground .... The Indoor Plant Bible. Page 21. Barron s. ISBN 0 7641 5769 8 ref Despite its name, little or no soil is used in potting soil because it is considered too heavy for growing houseplants. ref Pleasant ... 4 ref Some plants require potting soil that are specific for their environment. For example, an African violet would grow better in potting soil containing extra peat moss while a cactus would thrive in potting soil that contains material for sufficient drainage, most commonly perlite or sand. ref ... 2 ref But potting soil is not ideal for all contained gardening. Insectivorous plants, such as the Venus ... available potting soil is sterilized, in order to avoid the spread of weeds and plant borne diseases. It is possible to reuse commercial potting soil, provided that the remnants of plant roots ... take place. ref http www.tcpalm.com news 2008 jul 02 carol cloud bailey heat potting soil prepare it re Carol Cloud Bailey Heat potting soil to prepare it for replanting TCPalm.com ref Packaged potting soil is sold in bags ranging from convert 5 to 50 lb . ref Reader s Digest Association. Care free Plants. Page 298. Readers Digest. ISBN 0 7621 0358 2 ref As with garden soil, potting soil can attract ... potting soil. ref http www.azcentral.com arizonarepublic home articles 0628martha0628.html How to minimize dents in carpet from furniture, Arizona Republic ref Legionella contamination Infections ... journal author title Legionnaires disease associated with potting soil California, Oregon, and Washington ... also confirmed the presence of Legionella longbeachae in soil in Australia and Japan. ref http ... more details
soil Shifting cultivation SoilcontaminationSoil life Terra preta Fertilizer References Reflist ...Fertile soil has the following properties It is rich in nutrients necessary for basic plant nutrition ... , sulfur , and zinc . It contains soil organic matter that improves soil structure and soil moisture retention. Soil pH is in the range 6.0 to 6.8 for most plants but some prefer acid or alkaline conditions. Good soil structure, creating well drainage drained soil, but some soils are wetter as for producing ... of soil life microorganisms that support plant growth. It often contains large amounts of topsoil . In lands used for agriculture and other human activities, fertile soil typically arises from the use of soil conservation practices. Soil fertilization Bioavailability Bioavailable nitrogen is the element in soil that is most often lacking. Phosphorus and potassium are also needed in substantial ... in the world. Soil can be revitalized through physical means such as Soil steam sterilization soil steaming as well. Superheated steam is induced into the soil to kill pests and unblock nutrients ..., such as soil organic content, nitrogen in the soil, phosphorus and potassium, are far more often ... the rate at which nutrients are leached out of soils and may have a negative impact on soil fertility. Soil depletion Soil depletion occurs when the components which contribute to fertility are removed and not replaced, and the conditions which support soil fertility are not maintained. This leads ... soil management . One of the most widespread occurrences of soil depletion as of lc y 2008 ... of other effects, including overtillage which damages soil structure , overuse of inputs such as synthetic ... of soil. Global distribution Image Global soils map USDA.jpg thumb 600px center Global distribution of soil types of the USDA soil taxonomy system. Mollisols , shown here in dark green, are a good though not the only indicator of high soil fertility. They coincide to a large extend ... more details
The name soil stabilizer can refer to Soil cement , a mix of pulverized natural soil with small amount of Portland cement and water Cellular confinement , a honeycomb like plastic soil stabilizer. Disambig ... more details
Soil map is a map showing distribution of soil types and or soil properties soil pH , soil texture texture s, organic matter , depths of soil horizons horizons etc. in the area of interest. It is typically the end result of a soil survey inventory, i.e. soil survey . Soil maps are most commonly used ... projects. Traditional soil maps typically show only general distribution of soils, accompanied by the soil survey report. Many new soil maps are derived using digital soil mapping techniques. Such maps are typically richer in context and show higher spatial detail then the traditional soil maps. Soil .... Image Fig sample BSMC.jpg 453px An example of a traditional soil map showing soil mapping units, described soil profile s and legend. right In the digital era, soil maps are being inputted in digital ..., soil maps are only visualizations of the soil resource inventories commonly stored in a Soil Information System SIS , of which the major part is a Soil Geographical Database. A Soil Information ... for profile observations, soil mapping units and soil classes. Different elements of an SIS can be manipulated and then visualized against the spatial reference grids or polygons . For example, soil profiles can be used to make spatial prediction of different chemical and physical soil properties. One should also distinguish soil maps that display primary soil attributes, i.e. the soil attributes originally described or measured in the field, and the soil inferred attributes also called secondary soil information, i.e. the properties of the soils in the context of the soil use soil production capacity, soil reaction to certain use, soil functions, soil degradation measures etc. See also Map Soil science Soil survey Digital soil mapping Geographic information system GIS Pedometrics External links http www.digitalsoilmapping.org International Working Group on Digital Soil Mapping http www.IUSS.org International Union of Soil Sciences Soil Maps of the world http eusoils.jrc.it esdb archive ... more details
Scobey soil is the state soil of Montana . Scobey soil is known for its productivity for farming wheat http www.urbanext.uiuc.edu soil st soils mt soil.htm . See also Pedology soil study List of U.S. state soils External links http ortho.ftw.nrcs.usda.gov osd dat S SCOBEY.html http www.mt.nrcs.usda.gov soils mtsoils Category Pedology Category Soil in the United States Category Geology of Montana Category Agriculture in Montana Category Types of soil Category Symbols of Montana soil stub ... more details
Soil management concerns all operations, practices and treatments used to protect soil and enhance its performance. Practices Soil management practices that affect soil quality ref http soilquality.org management soil management practices.html Soilquality.org Soil Management Practices ref Controlling traffic on the soil surface helps to reduce soil compaction, which can reduce aeration and water infiltration. Cover crop s keep the soil anchored and covered in off seasons so that the soil is not eroded by wind and rain. Crop rotation s ref http soilmanagement.psu.edu smpublications.cfm Soil Management Penn State ref for row crops alternate high residue crops with lower residue crops to increase the amount of plant material left on the surface of the soil during the year to protect the soil from erosion. Nutrient management can help to improve the fertility of the soil and the amount of organic matter content, which improves soil structure and function. Tillage , especially reduced tillage or no till operations limit the amount of soil disturbance while cultivating a new crop and help to maintain plant residues on the surface of the soil for erosion protection and water retention. References Reflist External links wiktionary soil management soil stub Category Soil science ca Gesti del s l ... more details
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