soil

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soil

(soyl),
Dirt.
Farlex Partner Medical Dictionary © Farlex 2012

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
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
In Japan, 160 farms are producing high-yield, high-profit crops, including tomato, cucumber, melon, strawberry, capsicum, lettuce and herbs, through soil-less technology.
Always pot on into the same type of compost - soil-less mixtures or John Innes - to avoid problems with are looking bare, thread a few conifer clippings through for colour and texture.
This top of the line brand of coco coir brings crops a better oxygen-to-water ratio than other soil or soil-less grow systems.
"A shift towards protected and soil-less agriculture systems would substantially enhance the irrigation efficiency, water productivity and area productivity."
Hydroponic or soil-less gardening has been around for thousands of years.
Which is defined as the integration of conventional aquaculture (captive rearing and production of fish and other aquatic animal) with soil-less culture (growing agricultural crops without soil) according to the United Nations' (UN) Food and Agriculture Organization (FAO).
These include soil-less techniques such as Hydroponics, Aeroponics and Aquaponics that will redefine commercial agriculture.
If you are planting in pots, use a container at least 30cm in diameter and a compost comprising equal parts John Innes No 2 and a soil-less multi-purpose compost.
The first robot, named Smart Pot (SPOT), can plant strawberries, tomatoes, herbs, and leafy vegetables in a hydroponic garden, a soil-less plantation method where crops are placed in enriched water and are sheathed inside a minuscule chamber.
In-ground beds tend to work best where topsoil is deep because plant roots stay cooler the deeper they reach into the soil, but raised beds make gardening possible even in soil-less sites.
I have a mini garden on my balcony (on the 10th floor), and I research and experiment with various soil-less gardening techniques.