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  2. Soil test - Wikipedia

    en.wikipedia.org/wiki/Soil_test

    A soil test is a laboratory or in-situ analysis to determine the chemical, physical or biological characteristics of a soil. Possibly the most widely conducted soil tests are those performed to estimate the plant-available concentrations of nutrients in order to provide fertilizer recommendations in agriculture.

  3. Proctor compaction test - Wikipedia

    en.wikipedia.org/wiki/Proctor_compaction_test

    The original Proctor test, ASTM D698 / AASHTO T99, uses a 4-inch-diameter (100 mm) by 4.584-inch-high (116.4 mm) mold which holds 1/30 cubic feet of soil, and calls for compaction of three separate lifts of soil using 25 blows by a 5.5 lb hammer falling 12 inches, for a compactive effort of 12,375 ft-lbf/ft 3.

  4. Base-cation saturation ratio - Wikipedia

    en.wikipedia.org/wiki/Base-cation_saturation_ratio

    Base-cation saturation ratio (BCSR) is a method of interpreting soil test results that is widely used in sustainable agriculture, supported by the National Sustainable Agriculture Information Service (ATTRA) [1] and claimed to be successfully in use on over a million acres (4,000 km 2) of farmland worldwide.

  5. Agency for Agricultural Assemblies and Modernization

    en.wikipedia.org/wiki/Agency_for_Agricultural...

    The Agency for Agricultural Assemblies and Modernization (Indonesian: Badan Perakitan dan Modernisasi Pertanian, officially abbreviated as BrMP) [1], formerly Agricultural Instruments Standardization Agency (Indonesian: Badan Standardisasi Instrumen Pertanian, BSIP), is the supporting unit of the Ministry of Agriculture which is responsible for the engineering, assembly, testing, dissemination ...

  6. Soil compaction - Wikipedia

    en.wikipedia.org/wiki/Soil_compaction

    In geotechnical engineering, soil compaction is the process in which stress applied to a soil causes densification as air is displaced from the pores between the soil grains. When stress is applied that causes densification due to water (or other liquid) being displaced from between the soil grains, then consolidation , not compaction, has ...

  7. Soil compaction (agriculture) - Wikipedia

    en.wikipedia.org/wiki/Soil_compaction_(agriculture)

    Soil compaction can occur naturally by the drying and wetting process called soil consolidation, [17] [9] or when external pressure is applied to the soil. The most relevant human-induced causes of soil compaction in agriculture are the use of heavy machineries, tillage practice itself, inappropriate choice of tillage systems, as well as ...

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  9. Oedometer test - Wikipedia

    en.wikipedia.org/wiki/Oedometer_test

    An oedometer is fundamentally made out of three components: a "consolidation cell" to hold the soil sample, a mechanism to apply a known pressure over the sample, and an instrument to measure the changes in the sample's thickness. [12] The equipment required to perform an oedometer test is sometimes called an "oedometer test set".