loam

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Related to Loam soil: Sedimentary soil, Loamy soil

loam,

soil composed of sand, silt, clay, and organic matter in evenly mixed particles of various sizes. More fertile than sandy soils, loam is not stiff and tenacious like clay soils. Its porosity allows high moisture retention and air circulation. The popular confusion of loam with humushumus
, organic matter that has decayed to a relatively stable, amorphous state. It is an important biological constituent of fertile soil. Humus is formed by the decomposing action of soil microorganisms (e.g.
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 is probably due to the superior quality of both soils. According to the preponderance of their ingredients, loams are classified as sandy, clay, or silt loams. Most soils of agricultural importance are some type of loam.

Loam

 

a friable sandy and clayey sedimentary rock containing 10–30 percent (by weight) clay particles smaller than 0.005 mm. In soil science, loam with a higher clay content is called heavy loam, and that with less clay is called light loam. A distinction is made between coarse sandy, fine sandy, and silty loam, depending on the content of (1) sand grains of the corresponding size and (2) silty, or aleurite, particles.

The mineralogical composition of loam is varied: the more sandy loan has a high quartz content, whereas the more clayey type contains clay minerals, such as kaolinite, illite, and montmorillonite. Loam is sometimes rich in organic substances; in arid regions it may be rich in water-soluble salts. The origin of loam is usually continental; the corresponding ocean deposits are called sandy or aleurite clays. Loam is often used as a raw material for the production of brick.

loam

[lōm]
(geology)
Soil mixture of sand, silt, clay, and humus.
(metallurgy)
Molding material consisting of sand, silt, and clay used over backup material for producing massive castings, usually of iron or steel.

loam

In building construction, a mixture composed chiefly of moistened clay, sand, and silt, or some mixture including these ingredients. Once used as a mortar when combined with lime, or used as a plaster with the addition of chopped straw.

loam

1. rich soil consisting of a mixture of sand, clay, and decaying organic material
2. a paste of clay and sand used for making moulds in a foundry, plastering walls, etc.
References in periodicals archive ?
A) Graph of vibration spread in distance, B) Vibration map in sandy loam soil
Studies on the degradation dissipation and persistence of DDT in sandy loam soil under laboratory and field conditions.
Burrows were located mostly in loam soil on stony rises but others were in clay soil.
Sandy clay loam soil is the best suitable for acclimatization: After successful rooting, plantlets with profuse roots were transferred to the glasshouse in polythene bags containing two different soil media: sandy clay loam soil and sandy clay loam with peat moss.
The objective of this paper therefore was to evaluate soil/material interface friction and adhesion of Akure sandy clay loam soils in southwestern Nigeria.
We found that (1) Eastern moles are more likely to occur at sites with loam soil conditions, (2) the species' continued presence at a site is more likely in the presence of loam and sandy loam soils (3) Eastern moles were more likely to occupy sites with a greater proportion of forest cover within 305 m, an estimated distance over which dispersing moles may travel.
The whole profile hydraulic conductivity of Coulter silt loam soils is much faster than that of Barrow silt loam soil (Table 6).
Experiments conducted on sandy loam soil at the Sindh Agriculture University, Tandojam, showed that the crop production per acre was 2-3 times higher when bottle gourd and coriander were grown in sandy loam soil with pitcher irrigation method.
Memphis silt loam soil is distributed into the Southern Mississippi valley uplands, which extends approximately 3,340,000 acres, containing 70% silt, 20% clay, 9% sand, and 1% organic matter (Panicker 1992).