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  2. File:Illinois soil conservation news (IA CAT11086790002).pdf

    en.wikipedia.org/wiki/File:Illinois_soil...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more

  3. USDA soil taxonomy - Wikipedia

    en.wikipedia.org/wiki/USDA_soil_taxonomy

    The cryic temperature regime distinguishes some higher-level groups. These regimes are based on the mean annual soil temperature (MAST), mean summer temperature, and the difference between mean summer and winter temperatures all at a soil depth of 50 cm. It is normally assumed that the MAST (in °C) equals the sum of the mean annual air ...

  4. Climate of Illinois - Wikipedia

    en.wikipedia.org/wiki/Climate_of_Illinois

    As a result, the official record-lowest temperature for the state was −36 °F (−37.8 °C) recorded at Congerville on 5 January 1999. [11] In 2019, the January North American Cold Wave struck Illinois. This resulted in a new record low temperature, −38 °F (−38.9 °C), recorded on January 31, 2019, at Mount Carroll.

  5. Soil moisture improves in Illinois - AOL

    www.aol.com/weather/soil-moisture-improves...

    Illinois has received 3.41 inches of rain in the first half of July, 1.6 inches more than in the entire month of June, and leading to higher soil moisture across the state. Levels at 4 ...

  6. Soil thermal properties - Wikipedia

    en.wikipedia.org/wiki/Soil_thermal_properties

    One possible way of assessing soil thermal properties is the analysis of soil temperature variations versus depth Fourier's law, Q = − λ d T / d z {\displaystyle Q=-\lambda dT/dz\,} where Q is heat flux or rate of heat transfer per unit area J·m −2 ∙s −1 or W·m −2 , λ is thermal conductivity W·m −1 ∙K −1 ; dT / dz is the ...

  7. Drummer (soil) - Wikipedia

    en.wikipedia.org/wiki/Drummer_(soil)

    Drummer soil is the most abundant and extensive soil in Illinois. It occurs over more than 1,500,000 acres (6,100 km 2) in the state. It is the most productive soil in the state. Corn and soybeans are the principal crops grown in Drummer soil. The average annual precipitation in areas of Drummer soil ranges from 32 to 40 inches (1,000 mm).

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  9. Frost line - Wikipedia

    en.wikipedia.org/wiki/Frost_line

    The frost line—also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources.