soil


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Related to soil: soil profile, soil erosion, Soil formation

soil

(soyl),
Dirt.

soil

the uppermost layer of the earth's crust that supports the majority of terrestrial plant life together with many animals and microorganisms. Soil derives from the erosion of the rock strata and contains minerals and variable amounts of organic material derived from organisms which live or have lived upon it. Soils are affected by climate, living organisms, parent rock, relief, groundwater and age, and usually contain various ‘horizons’, the succession of which is called the ‘soil profile’. MULL soils tend to be alkaline and ‘Mor’ soils acid. Soils may be heavy clay, loam (sand and clay), peaty (large amounts of dead plant material), chalky light or sandy

soil

the earth, origin of all plant growth and the basis of all animal agriculture. Its characteristics of chemical composition, physical structure, especially porosity and water retaining capacity, its humus content, pH and salinity exert enormous effects on its productivity.

soil analysis
an essential activity in densely farmed farms. Measures the soil content of total and available amounts of each of the important soil minerals.
soil contaminated herbage
either from dust storms or in loose soil by hoof movement may contribute to dental attrition in sheep, or sand colic in horses.
soil eating
a form of pica; caused by salt deficiency.
soil fumigants
are used to prepare fields for planting and may cause poisoning in animals grazing them or eating crops harvested from them. See methyl bromide.
soil type
includes clay, sand, loam.
References in classic literature ?
Inaccessible and wonderfully extended over this soil covered with picturesque projections
This further experience also I gained: I said to myself, I will not plant beans and corn with so much industry another summer, but such seeds, if the seed is not lost, as sincerity, truth, simplicity, faith, innocence, and the like, and see if they will not grow in this soil, even with less toil and manurance, and sustain me, for surely it has not been exhausted for these crops.
By avarice and selfishness, and a grovelling habit, from which none of us is free, of regarding the soil as property, or the means of acquiring property chiefly, the landscape is deformed, husbandry is degraded with us, and the farmer leads the meanest of lives.
We did our best to destroy it, as we destroyed the soil of New England.
We'll never be goin' around smellin' out an' swipin' bits of soil an' carryin' it up a hill in a basket.
At the 'big picture' level, there are two important published frameworks that have provided, for more than fifty years, the 'soil 101' conceptual frameworks for soil diversity and soil dynamics: the 'Clorpt' equation of Jenny (1941) and the pedogenetic theory of Simonson (1959).
Since soil is highly susceptible to disturbances caused by humans, it's imperative to use soil survey data when managing land and natural resources," said Dr.
8220;One of the goals of the UN's efforts is to advocate sustainable soil management,” says Camarillo.
Soil is an aggregate of four basic components: mineral solids, water, air and organic matter.
The Studies showed that the most important soil characteristics affecting the separation of vegetation types of Poshtkouh pastures of Yazd are electrical conductivity, texture, potassium salts and minerals, gypsum and lime, and any plant according to the vegetation zone, ecological needs and tolerance range with some of the soil characteristics are related [7].
The effect of wetting-drying cycles on soil C mineralisation has been examined in the laboratory and field settings (Fierer and Schimel 2002; Borken et al.
Tamsyn Jones rose to the challenge beautifully, showing how plants and various soil microbes all need each other to produce a viable and healthy environment.