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  2. Wind erosion equation - Wikipedia

    en.wikipedia.org/wiki/Wind_erosion_equation

    Research indicates that soil movement commences when wind speeds surpass a critical threshold and the rate of erosion aligns with the cube of the friction velocity. Friction velocity, denoted as U ∗ {\textstyle U_{*}} , is a meteorological term for wind speed at the Earth's surface and can be quantified using the equation:

  3. Soil management - Wikipedia

    en.wikipedia.org/wiki/Soil_management

    Tilling the soil, or tillage, is the breaking of soil, such as with a plough or harrow, to prepare the soil for new seeds. Tillage systems vary in intensity and disturbance. Conventional tillage is the most intense tillage system and disturbs the deepest level of soils. At least 30% of plant residue remains on the soil surface in conservation ...

  4. Soil erosion - Wikipedia

    en.wikipedia.org/wiki/Soil_erosion

    [34] [35] There is growing evidence that tillage erosion is a major soil erosion process in agricultural lands, surpassing water and wind erosion in many fields all around the world, especially on sloping and hilly lands [36] [37] [38] A signature spatial pattern of soil erosion shown in many water erosion handbooks and pamphlets, the eroded ...

  5. Soil conservation - Wikipedia

    en.wikipedia.org/wiki/Soil_conservation

    Tree, shrubs and ground-cover are effective perimeter treatment for soil erosion prevention, by impeding surface flows. A special form of this perimeter or inter-row treatment is the use of a "grass way" that both channels and dissipates runoff through surface friction, impeding surface runoff and encouraging infiltration of the slowed surface ...

  6. Tillage erosion - Wikipedia

    en.wikipedia.org/wiki/Tillage_Erosion

    Eroded hilltops due to tillage erosion. Tillage erosion is a form of soil erosion occurring in cultivated fields due to the movement of soil by tillage. [1] [2] There is growing evidence that tillage erosion is a major soil erosion process in agricultural lands, surpassing water and wind erosion in many fields all around the world, especially on sloping and hilly lands [3] [4] [5] A signature ...

  7. Unified Soil Classification System - Wikipedia

    en.wikipedia.org/wiki/Unified_Soil...

    The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt):

  8. How a GM layoff email sent to employees triggered a storm on ...

    www.aol.com/gm-layoff-email-sent-employees...

    “Companies ask for loyalty, but they’re really not giving that type of treatment back,” Lalgee said. The job market has shifted since just a year ago, Lalgee said, making it harder for ...

  9. Erosion control - Wikipedia

    en.wikipedia.org/wiki/Erosion_control

    Erosion control is the practice of preventing or controlling wind or water erosion in agriculture, land development, coastal areas, river banks and construction. Effective erosion controls handle surface runoff and are important techniques in preventing water pollution , soil loss , wildlife habitat loss and human property loss.

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