Soil texture - A measure of the proportion of sand, silt and clay found in a soil sample, Loam soil - Contains equal amounts of sand, silt and clay, Soil structure - The way soil particles clump together into large units called aggregates or peds, Soil compaction - When particles are pressed together and aggregates are destroyed, Adsorption - Water that forms a thin film around a soil particle ad is held by attraction between the negative charges of clay and positive charges on the water molecule, Capillary action - Water held in pores between soil aggregates, Gravitational water - Water moved through soil by gravity, fills cracks and large pores on a temporary basis, Moisture stress - Water level lower in plants than normal or transpiration rate is too high , Available water capacity - Field capacity - permanent wilting point, Permanent wilting point - The point at which no more capillary water can be removed from a soil by plant roots , Field capacity - The amount of water present in a soil after gravitational water has drained away ,
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Physical characteristics of soil definitions
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Marylouise
Senior Cycle
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Agricultural Science
Soil
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