The soil pH is a measure of the acidity or alkalinity in soils. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions ({chem|H|+} or, more precisely, {chem|H|3|O|+|aq}) in a solution. In water, it nomally ranges from -1 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is alkaline. Soil pH is considered ...
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http://en.wikipedia.org/wiki/Soil_pH
Measurement of the acidity or alkalinity of the soil. The pH scale ranges from 0 to 14. A pH of 7 is neutral, a pH less than 7 is acidic, and a pH greater than 7 is basic. Soil pH is important because it affects the availability of nutrients to the plants and the activity of soil microorganisms beneficial to plants.
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http://www.jerseyyards.org/resources/resourcesglossary/
Basically, pH is a measure of the amount of lime (calcium) contained in your soil. A soil with a pH lower than 7.0 is an acid soil, a soil pH higher than 7.0 is alkaline soil. Soil pH can be tested with an inexpensive test kit.
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http://www.thegardenhelper.com/dictionary.html
The measure of the amount of lime (calcium) contained in soil. See pH
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https://www.encyclo.co.uk/local/21504
the measurement of the concentration of hydrogen ions in soil on a scale of 0.0 to 14.0, where 7.0 is neutral and lower numbers reflect higher concentrations. Soil pH affects how available nutrients present in the soil, including those nutrients added by fertilizers, are for plants to absorb. Soil testing confirms soil pH, and soil amendments can a...
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https://www.pennington.com/all-products/fertilizer/resources/glossary-terms
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