soil

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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 periodicals archive ?
Some companies sell soil-less mixes with a time-release fertilizer already in them, which would be the easiest route to take.
Soil-less compost is lightweight, so the pot may be less stable.
Today, I am 70 years old and know the concept of soil-less gardening or hydroponics has been around the world for many years.
Choose instead a soil-less compost or one containing loam such as John Innes Compost No 3.
He added: "Recently, soil-less culture is being practised in greenhouses and shade-houses (awnings) to grow vegetables such as spinach, strawberry, cabbage in addition to cucumber, tomato, sweet peppers, etc.
Soil-less, controlled-environment agriculture (such as hydroponics and aeroponics) can be scaled into vertical farming operations for large-scale urban agriculture.
Nursery plants are grown in containers filled with a soil-less potting media, formally called "substrate," which typically consists of Canadian peat moss, perlite (heat-expanded volcanic rock), vermiculite (heat-expanded silicate mineral), and pine bark.
They should be soil-less and equal parts of fine textured bulking material such as coir and fine sand, which ensures effective drainage and aeration for germinating seeds.
5cm high, separate it from the old leaves and pot it on in a soil-less compost.
Nutrients and fertilisers for soil-less gardening, or plants, etc.
It commands a section of this same soil-less banking and ably anchors the forsythia plantings.
They should be planted in either bulb fibre, soil-based or soil-less compost, provided it has a good, open texture and is moisture retentive but free-draining.