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2. Bulk soil - Wikipedia

   en.wikipedia.org/wiki/Bulk_soil

   Bulk soil. Bulk soil is soil outside the rhizosphere that is not penetrated by plant roots. The bulk soil is like an ecosystem, it is made up of many things such as: nutrients, ions, soil particles, and root exudates. There are many different interactions that occur between all the members of the bulk soil. Natural organic compounds are much ...

3. Natural Resources Conservation Service - Wikipedia

   en.wikipedia.org/wiki/Natural_Resources...

   Natural Resources Conservation Service ( NRCS ), formerly known as the Soil Conservation Service ( SCS ), is an agency of the United States Department of Agriculture (USDA) that provides technical assistance to farmers and other private landowners and managers. Its name was changed in 1994 during the presidency of Bill Clinton to reflect its ...

4. Alfisol - Wikipedia

   en.wikipedia.org/wiki/Alfisol

   Alfisol. Alfisols are a soil order in USDA soil taxonomy. Alfisols form in semi-arid to humid areas, typically under a hardwood forest cover. They have a clay-enriched subsoil and relatively high native fertility. "Alf" refers to aluminium (Al) and iron (Fe). Because of their productivity and abundance, Alfisols represent one of the more ...

5. USDA soil taxonomy - Wikipedia

   en.wikipedia.org/wiki/USDA_soil_taxonomy

   A taxonomy is an arrangement in a systematic manner; the USDA soil taxonomy has six levels of classification. They are, from most general to specific: order, suborder, great group, subgroup, family and series. Soil properties that can be measured quantitatively are used in this classification system – they include: depth, moisture ...

6. Fuller's earth - Wikipedia

   en.wikipedia.org/wiki/Fuller's_earth

   Fuller's earth is a term for various clays used as an absorbent, filter, or bleaching agent. Products labeled fuller's earth typically consist of palygorskite (also known as attapulgite) or bentonite. [ 1] Primary modern uses include as absorbents for oil, grease, and animal waste (cat litter), and as a carrier for pesticides and fertilizers.

7. Digital soil mapping - Wikipedia

   en.wikipedia.org/wiki/Digital_soil_mapping

   Digital soil mapping ( DSM) in soil science, also referred to as predictive soil mapping[ 1] or pedometric mapping, is the computer-assisted production of digital maps of soil types and soil properties. Soil mapping, in general, involves the creation and population of spatial soil information by the use of field and laboratory observational ...