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In agriculture, leaching is the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. Soil structure , crop planting, type and application rates of fertilizers , and other factors are taken into account to avoid excessive nutrient loss.
A leaching model is a hydrological model by which the leaching with irrigation water of dissolved substances, notably salt, in the soil is described depending on the hydrological regime and the soil's properties. The model may describe the process (1) in time and (2) as a function of amount of water applied.
Leaching in soil is highly dependent on the characteristics of the soil, which makes modeling efforts difficult. [4] Most leaching comes from infiltration of water, a washing effect much like that described for the leaching process of biological substances.
In pedology, leaching is the removal of soluble materials from one zone in soil to another via water movement in the profile. [1] It is a mechanism of soil formation distinct from the soil forming process of eluviation, which is the loss of mineral and organic colloids.
Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always a solvent), and may refer to: . Leaching (agriculture), the loss of water-soluble plant nutrients from the soil; or applying a small amount of excess irrigation to avoid soil salinity
Fitzgerald said the EPA has installed liners at the site to prevent toxic materials from leaching into the soil. She said the agency performed soil testing before beginning and will test the soil ...
Soil salinity control refers to controlling the process and progress of soil salinity to prevent soil degradation by salination and reclamation of already salty (saline) soils. Soil reclamation is also known as soil improvement, rehabilitation, remediation , recuperation, or amelioration.
The EPA has not responded to the complaints, but agency officials said its crews have installed liners to prevent toxic chemicals from leaching into soil. They will also conduct soil testing after ...