loam

(redirected from Loamy soil)
Also found in: Dictionary, Thesaurus, Medical.

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.
..... Click the link for more information.
 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 ?
Territories of slopes: 3--Gentle slopes (1-2), composed by loamy soils and clays, with light-grey forrest washed-out soils under ploughed field; 4--Slightly falling down slopes (3-5), formed by loamy soils and clays, with light-grey forrest washed-out soils under ploughed field, construction and fragments of beech forests; 5--Falling down and steep slopes (3-5), formed by loamy soils and clays, with light-grey forrest medium-and highly washed-out soils, under construction and beech forests fragments; 6--Slopes of river valleys, gullies and ravines, formed by loamy soils and sandy loam, with light-grey forrest medium-and highly washed-out soils, under ploughed field, construction and beech forests fragments.
2008) showed that stem B concentration, averaged for a sandy and a loamy soil, remained essentially unchanged between harvest and flowering, while the leaf B concentration at flowering was -5 times that of the stem.
Beans 3 and Groundnut 2 nodulated better in loamy soil than the other beans and groundnut varieties, whereas Beans 3 produced more nodules in humus soil than the other varieties.
Prefers moist, well-drained, loamy soil but is adaptable.
As recommended in the October issue of Garden Design, ``plant bluebells lavishly: 70 per square yard, 4 inches deep, in rich, loamy soil.
The loamy soil accumulated two to three times more of the available lead, and most of the lead decomposition products there, unlike those at the other sites, were in an extractable (largely unbound) form.
Asparagus prefers a fertile, reasonably well-drained, loamy soil.
Whereas growing carrots in the sandy soil rather than a loamy soil and cultivation in spring season give more enhanced colours.
Plant evergreen trees and shrubs | Put up windbreaks to protect new trees and shrubs | Trim grey-leaved shrubs to keep them bushy | Stake tall perennials | Deadhead daffodils and primroses | Sow globe artichokes, which can be planted out on light or loamy soil in full sun | Tomato plants started in January should be ready to move into their final pots or be planted directly into a glasshouse border | Continue to lift and divide clumps of congested perennials and grasses | Cut back lavatera hard, as new shoots will soon appear | Tear off rose sucker shoots growing from below the point where the variety is grafted on to the rootstock, where you see a lumpy bit on the main stem
Those who say lilies are not as difficult to grow as their exotic appearance suggests, assume everyone has the perfect growing medium - an open, free-draining loamy soil, with a high humus content in which the sub soil has been broken up to provide near perfect drainage.
Most bamboos are grown in a moderately acidic loamy soil.
Strawberry plants can adapt to a wide range of soil types, but perform best on well-drained loamy soil with a pH between 5.