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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.
Do you know the nutrient level of the soil in your garden? Do you know how much fertilizer to add next season? Soil testing will answer both questions.
Use of an inexpensive pH testing kit, where in a small sample of soil is mixed with indicator solution which changes colour according to the acidity. Use of litmus paper. A small sample of soil is mixed with distilled water, into which a strip of litmus paper is inserted. If the soil is acidic the paper turns red, if basic, blue.
Helige-Truog pH Testing Field Kit. Long before Truog began his career as a professor and soil scientist at the University of Wisconsin-Madison, it was known that some soils were not as productive as others due to their pH level. The pH level affected the amount of available nutrients in the soil for the plant to utilize. The soil acidity could ...
1st-generation testing vs. 2nd-generation testing [ edit ] 1st-generation ATP tests are derived from hygiene monitoring uses where samples are relatively free of interferences. 2nd-generation tests are specifically designed for water, wastewater and industrial applications where, for the most part, samples contain a variety of components that ...