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2. The 2 Best Ways to Test Your Soil pH, According to a ... - AOL

   www.aol.com/2-best-ways-test-soil-113000549.html

   The ideal way to test pH is to send it to a lab. Wait, wait, don’t stop reading at the word “lab!”. A lab test is simpler than you think–and probably easier than one of the at-home soil ...

3. 16 Things You Can Get Free or Cheap at an Extension Office - AOL

   www.aol.com/finance/16-things-free-cheap...

   Find out your soil composition at your county extension office, where you can get a soil sample kit and run soil tests to get expert analysis. Soil testing is often free, though you may pay a ...

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

   www.aol.com/best-soil-test-kits-help-202000925.html

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5. Soil pH - Wikipedia

   en.wikipedia.org/wiki/Soil_pH

   Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Soil pH is a key characteristic that can be used to make informative analysis both qualitative and quantitatively regarding soil characteristics. [1] pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+.

6. Soil test - Wikipedia

   en.wikipedia.org/wiki/Soil_test

   A soil test can determine fertility, or the expected growth potential of the soil which indicates nutrient deficiencies, potential toxicities from excessive fertility and inhibitions from the presence of non-essential trace minerals. The test is used to mimic the function of roots to assimilate minerals. The expected rate of growth is modeled ...

7. Soil moisture sensor - Wikipedia

   en.wikipedia.org/wiki/Soil_moisture_sensor

   A simple soil moisture sensor for gardeners. Soil moisture sensors measure the volumetric water content in soil. [1] Since the direct gravimetric measurement of free soil moisture requires removing, drying, and weighing of a sample, soil moisture sensors measure the volumetric water content indirectly by using some other property of the soil, such as electrical resistance, dielectric constant ...