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2. Can Epsom Salt Help Your Garden Grow? - AOL

   www.aol.com/epsom-salt-help-garden-grow...

   Rapitest Soil Test Kit. Epsom Salt. Large Watering Can. Editor’s note: Epsom salt has a laxative effect when consumed, so keep pets and children away from the areas when you apply it, and wear ...

3. 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.

4. Standard penetration test - Wikipedia

   en.wikipedia.org/wiki/Standard_penetration_test

   The standard penetration test (SPT) is an in-situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil. This test is the most frequently used subsurface exploration drilling test performed worldwide. The test procedure is described in ISO 22476-3, ASTM D1586 [1] and Australian Standards AS ...

5. Atterberg limits - Wikipedia

   en.wikipedia.org/wiki/Atterberg_limits

   Atterberg limits. The Atterberg limits are a basic measure of the critical water contents of a fine-grained soil: its shrinkage limit, plastic limit, and liquid limit. Depending on its water content, soil may appear in one of four states: solid, semi-solid, plastic and liquid. In each state, the consistency and behavior of soil are different ...

6. Nuclear densitometry - Wikipedia

   en.wikipedia.org/wiki/Nuclear_densitometry

   Nuclear densitometry is a technique used in civil construction and the petroleum industry, as well as for mining and archaeology purposes, to measure the density and inner structure of the test material. The processes uses a nuclear density gauge, which consists of a radiation source that emits particles and a sensor that counts the received ...

7. Proctor compaction test - Wikipedia

   en.wikipedia.org/wiki/Proctor_compaction_test

   Proctor compaction test. The Proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. The test is named in honor of Ralph Roscoe Proctor [de], who in 1933 showed that the dry density of a soil for a given ...