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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.
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
Biological substances can experience leaching themselves, [2] as well as be used for leaching as part of the solvent substance to recover heavy metals. [6] Many plants experience leaching of phenolics, carbohydrates, and amino acids, and can experience as much as 30% mass loss from leaching, [5] just from sources of water such as rain, dew, mist, and fog. [2]
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 .
Dispersion is a process that occurs in soils that are particularly vulnerable to erosion by water. In soil layers where clays are saturated with sodium ions ("sodic soils"), soil can break down very easily into fine particles and wash away. This can lead to a variety of soil and water quality problems, including:
Parboiling (or leaching) is the partial or semi boiling of food as the first step in cooking. The word is from the Old French parbouillir , 'to boil thoroughly' but by mistaken association with "part", it has acquired its current meaning.
Podsolisation is an extreme form of leaching which causes the eluviation of iron and aluminium sesquioxides. [1] The process generally occurs in areas where precipitation is greater than evapotranspiration. The minerals are removed by a process known as leaching.
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.