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  2. Loam - Wikipedia

    en.wikipedia.org/wiki/Loam

    Soil types by clay, silt and sand composition as used by the United States Department of Agriculture. Loam (in geology and soil science) is soil composed mostly of sand (particle size > 63 micrometres (0.0025 in)), silt (particle size > 2 micrometres (7.9 × 10 −5 in)), and a smaller amount of clay (particle size < 2 micrometres (7.9 × 10 −5 in)).

  3. Soil texture - Wikipedia

    en.wikipedia.org/wiki/Soil_texture

    Classifications are typically named for the primary constituent particle size or a combination of the most abundant particles sizes, e.g. "sandy clay" or "silty clay". A fourth term, loam, is used to describe equal properties of sand, silt, and clay in a soil sample, and lends to the naming of even more classifications, e.g. "clay loam" or ...

  4. Water retention curve - Wikipedia

    en.wikipedia.org/wiki/Water_retention_curve

    Water retention curve for a sand (Ss), either silt or clay-loam (Uu), either loam-silt or clay (Lu), and either clay or peat (Tt). Water retention curve is the relationship between the water content, θ, and the soil water potential, ψ.

  5. Clay, sand, silt, loam: How different soils affect gardens - AOL

    www.aol.com/news/clay-sand-silt-loam-different...

    Clay particles are very small (by definition less than 2-thousandths of a millimeter across). Sand particles are relatively large (by definition from 2- to 5-hundredths of a millimeter across).

  6. Physical properties of soil - Wikipedia

    en.wikipedia.org/wiki/Physical_properties_of_soil

    In the illustrated USDA textural classification triangle, the only soil in which neither sand, silt nor clay predominates is called loam. While even pure sand, silt or clay may be considered a soil, from the perspective of conventional agriculture a loam soil with a small amount of organic material is considered "ideal", inasmuch as fertilizers ...

  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.

  8. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    Ruston fine sandy loam: Texas: 1.9 Glouchester loam: New Jersey: 11.9 Grundy silt loam: Illinois: 26.3 Gleason clay loam: California: 31.6 Susquehanna clay loam: Alabama: 34.3 Davie mucky fine sand: Florida: 100.8 Sands — 1–5 Fine sandy loams — 5–10 Loams and silt loams — 5–15 Clay loams — 15–30 Clays — over 30 Sesquioxides ...

  9. Atterberg limits - Wikipedia

    en.wikipedia.org/wiki/Atterberg_limits

    The plasticity index is the size of the range of water contents where the soil exhibits plastic properties. The PI is the difference between the liquid and plastic limits (PI = LL-PL). Soils with a high PI tend to be clay, those with a lower PI tend to be silt, and those with a PI of 0 (non-plastic) tend to have little or no silt or clay.

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