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  2. Rice cultivation in Arkansas - Wikipedia

    en.wikipedia.org/wiki/Rice_cultivation_in_Arkansas

    The University of Arkansas Division of Agriculture (U.A.D.A.) suggests different amounts of Nitrogen addition to soil depending on such factors as soil type, rice variety being grown, crop rotation, etc. For example, the U.A.D.A. recommends 150 lb. N/acre ("this recommendation is for N applied in a 2 or 3-way split application where 90 lb N ...

  3. Sand-based athletic fields - Wikipedia

    en.wikipedia.org/wiki/Sand-based_athletic_fields

    Highly maintained areas of grass, such as those on an athletic field or on golf greens and tees, can be grown in native soil or sand-based systems. There are advantages and disadvantages to both that need to be considered before deciding what type of soil to grow turf in. [4] Native soils offer many positive qualities, such as high nutrient holding capacity, water holding capacity, and sure ...

  4. Infiltration (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Infiltration_(hydrology)

    In semi-arid savannas and grasslands, the infiltration rate of a particular soil depends on the percentage of the ground covered by litter, and the basal cover of perennial grass tufts. On sandy loam soils, the infiltration rate under a litter cover can be nine times higher than on bare surfaces.

  5. Topsoil - Wikipedia

    en.wikipedia.org/wiki/Topsoil

    An optimum figure for topsoil in the UK is a C:N ratio of less than 20:1. A sawdust base typically has a high C:N ratio in the order of 400:1 while an alfalfa hay has a low carbonaceous content and can typically have a C:N ratio around 12:1.

  6. Ultisol - Wikipedia

    en.wikipedia.org/wiki/Ultisol

    Map of the United States showing what percentage of the soil in a given area is classified as an Ultisol-type soil. The great majority of the land area classified in the highest category (75%-or-greater Ultisol) lies in the South and overlays with the Piedmont Plateau, which runs as a diagonal line through the South from southeast (in Alabama) to northwest (up into parts of Maryland).

  7. Universal Soil Loss Equation - Wikipedia

    en.wikipedia.org/wiki/Universal_Soil_Loss_Equation

    The Universal Soil Loss Equation (USLE) is a widely used mathematical model that describes soil erosion processes. [1]Erosion models play critical roles in soil and water resource conservation and nonpoint source pollution assessments, including: sediment load assessment and inventory, conservation planning and design for sediment control, and for the advancement of scientific understanding.

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    What if I have questions or need help with AOL Mail? You can find instant answers on our AOL Mail help page . Should you need additional assistance we have experts available around the clock at 800-730-2563.

  9. Buffer strip - Wikipedia

    en.wikipedia.org/wiki/Buffer_strip

    Contour buffer strips used to retain soil and reduce erosion. A buffer strip is an area of land maintained in permanent vegetation that helps to control air quality, soil quality, and water quality, along with other environmental problems, dealing primarily on land that is used in agriculture.

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