20 Facts About Soil


Soil, commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.

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Soil is a product of several factors: the influence of climate, relief, organisms, and the soil's parent materials interacting over time.

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Soil science has two basic branches of study: edaphology and pedology.

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Soil has a mean prokaryotic density of roughly 10 organisms per gram, whereas the ocean has no more than 10 prokaryotic organisms per milliliter of seawater.

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Soil texture is determined by the relative proportions of the individual particles of sand, silt, and clay that make up the soil.

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Soil pH is a function of many soil forming factors, and is generally lower where weathering is more advanced.

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Soil is said to be formed when organic matter has accumulated and colloids are washed downward, leaving deposits of clay, humus, iron oxide, carbonate, and gypsum, producing a distinct layer called the B horizon.

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Soil bulk density, when determined at standardized moisture conditions, is an estimate of soil compaction.

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Soil consistency is the ability of soil materials to stick together.

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Soil reactivity is expressed in terms of pH and is a measure of the acidity or alkalinity of the soil.

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The World Reference Base for Soil Resources aims to establish an international reference base for soil classification.

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Soil is used in agriculture, where it serves as the anchor and primary nutrient base for plants.

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Soil material is a critical component in mining, construction and landscape development industries.

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Soil resources are critical to the environment, as well as to food and fibre production, producing 98.

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Soil provides minerals and water to plants according to several processes involved in plant nutrition.

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Soil absorbs rainwater and releases it later, thus preventing floods and drought, flood regulation being one of the major ecosystem services provided by soil.

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Soil acidification is accelerated by the use of acid-forming nitrogenous fertilizers and by the effects of acid precipitation.

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Soil highlighted the importance of soil in the management of vineyards.

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Soil's conclusion came from the fact that the increase in the plant's weight had apparently been produced only by the addition of water, with no reduction in the soil's weight.

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Curtis F Marbut, influenced by the work of the Russian team, translated Glinka's publication into English, and, as he was placed in charge of the U S National Cooperative Soil Survey, applied it to a national soil classification system.

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