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  2. Soil conditioner - Wikipedia

    en.wikipedia.org/wiki/Soil_conditioner

    Soil conditioner. A soil conditioner is a product which is added to soil to improve the soil’s physical qualities, usually its fertility (ability to provide nutrition for plants) and sometimes its mechanics. In general usage, the term "soil conditioner" is often thought of as a subset of the category soil amendments (or soil improvement, soil ...

  3. Leonardite - Wikipedia

    en.wikipedia.org/wiki/Leonardite

    Leonardite is a soft waxy, black or brown, shiny, vitreous mineraloid that is easily soluble in alkaline solutions. It is an oxidation product of lignite, associated with near-surface mining. [1] It is a rich source of humic acid (up to 90%) [2] and is used as a soil conditioner, as a stabilizer for ion-exchange resins in water treatment, [3 ...

  4. 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): If the ...

  5. Akadama - Wikipedia

    en.wikipedia.org/wiki/Akadama

    Akadama. Akadama (赤玉土, akadamatsuchi, red ball earth) is a naturally occurring, granular clay -like mineral used as soil for bonsai trees and other container-grown plants. It is surface-mined, immediately sifted and bagged, and supplied in various grades; the deeper-mined grade are somewhat harder and more useful in horticulture than the ...

  6. Physical properties of soil - Wikipedia

    en.wikipedia.org/wiki/Physical_properties_of_soil

    The physical properties of soil, in order of decreasing importance for ecosystem services such as crop production, are texture, structure, bulk density, porosity, consistency, temperature, colour and resistivity. [1] Soil texture is determined by the relative proportion of the three kinds of soil mineral particles, called soil separates: sand ...

  7. Soil texture - Wikipedia

    en.wikipedia.org/wiki/Soil_texture

    Soil texture is a classification instrument used both in the field and laboratory to determine soil classes based on their physical texture. Soil texture can be determined using qualitative methods such as texture by feel, and quantitative methods such as the hydrometer method based on Stokes' law .

  8. Humus - Wikipedia

    en.wikipedia.org/wiki/Humus

    Humus has a characteristic black or dark brown color and is an accumulation of organic carbon. Besides the three major soil horizons of (A) surface/topsoil, (B) subsoil, and (C) substratum, some soils have an organic horizon (O) on the very surface. Hard bedrock (R) is not in a strict sense soil. In classical [1] soil science, humus is the dark ...

  9. Arthur Wallace - Wikipedia

    en.wikipedia.org/wiki/Arthur_Wallace

    P.A.M. / Soil Conditioner. Wallace is responsible for the current implementation and success of the soil conditioner – linear, water-soluble, anionic polyacrylamide. Monsanto launched the technology of synthetic and natural polyelectrolytes as soil conditions for the formation of water-stable soil aggregates in 1952.

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