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2. Plant tissue test - Wikipedia

   en.wikipedia.org/wiki/Plant_tissue_test

   Any laboratory test (soil or tissue test) performed by a commercial company will cost the grower a fee. Laboratory tests take at least a week to complete, usually 2 weeks. It takes time to dry the samples, send them to the lab, complete the lab-tests, and then return the results to the grower.

3. Colorimetric analysis - Wikipedia

   en.wikipedia.org/wiki/Colorimetric_analysis

   Colorimetric analysis is a method of determining the concentration of a chemical element or chemical compound in a solution with the aid of a color reagent. It is applicable to both organic compounds and inorganic compounds and may be used with or without an enzymatic stage.

4. MBAS assay - Wikipedia

   en.wikipedia.org/wiki/MBAS_assay

   A methylene blue active substances assay, or MBAS assay, is a colorimetric analysis test method that uses methylene blue to detect the presence of anionic surfactants (such as a detergent or foaming agent) in a sample of water. An anionic surfactant detected by the color reaction is called a methylene blue active substance (MBAS). [1]

5. For healthy plants, test your garden's soil for pH level - AOL

   www.aol.com/lifestyle/healthy-plants-test...

   Every plant requires a specific soil pH range within which it can best absorb essential nutrients. Because the optimal range is different for every plant, gardeners should learn the pH ...

6. The Best Soil Test Kits Will Help You Grow Your Perfect Garden

   www.aol.com/lifestyle/best-soil-test-kits-help...

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7. Soil test - Wikipedia

   en.wikipedia.org/wiki/Soil_test

   In geotechnical engineering, a soil test can be used to determine the physical characteristics of a soil, such as its water content, void ratio or bulk density. Soil testing can also provide information related to the shear strength, rate of consolidation and permeability of the soil. The following is a non-exhaustive list of engineering soil ...

8. Microtox bioassay - Wikipedia

   en.wikipedia.org/wiki/Microtox_bioassay

   Microtox Osmotic Adjustment Solution (MOAS) is a nontoxic solution that is made up of 22% Sodium Chloride and Ultra Pure Water. This solution is added to a sample to adjust the osmotic pressure to approximately 2% NaCl. [11] Reconstitution Solution consists of specially prepared, nontoxic Ultra Pure Water. [11]

9. Iron deficiency (plant disorder) - Wikipedia

   en.wikipedia.org/wiki/Iron_deficiency_(plant...

   Iron deficiency can be avoided by choosing appropriate soil for the growing conditions (e.g., avoid growing acid loving plants on lime soils), or by adding well-rotted manure or compost. If iron deficit chlorosis is suspected then check the pH of the soil with an appropriate test kit or instrument. Take a soil sample at surface and at depth.