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 ?
A project is now underway for the construction of greenhouses for soil-less horticultural production on the roof of a public housing complex in Corviale (Rome).
In a series of greenhouse studies, Albano grew marigolds for 47 days in containers filled with standard soil-less potting media.
Venus fly trap SOIL-less, they get all the nutrients they need from one fly a week.
Most herbs flourish in a free-draining environment and as a general rule, a 3:1 mixture of soil-less compost such as peat moss (planting mix) and loam-based compost (soil mix) gives the best results.
Other plans include introducing the latest technologies in agriculture such as hydroponic and soil-less gardening, proposing regulations, training workforce, creating job opportunities and spreading awareness.
Qatar's farming methods include open-field agriculture, greenhouse production, and hydroponics, a soil-less culture technology which uses less water and land and can yield up to 10 times the crop grown in an open field.
Use a good-quality, fine-textured, sterile soil-less mix for germinating indoor seeds, to avoid damping off.
In the greenhouse, Peter uses soil-less compost, but once the plants are transplanted he uses the compost required by the specific vegetables.
They should be soil-less and consist of 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 fromthe old leaves and pot it on in a soil-less compost.
But soil-less container mixes are often so light they dry out quickly.
Although ASF's soil-less growing methods (much of its produce is grown in substrates) bar it from organic classification, Porter is happy charging more than for standard produce because he believes a significant number of consumers have concerns about the safety of pesticides.