soil pH

Dirt's chemical balance

Soil pH is a measure of the acidity or alkalinity of soil, expressed on a scale from 0 to 14, with 7 being neutral.

Values below 7 indicate acidic soil, while values above 7 indicate alkaline soil.

Most plants thrive in slightly acidic to neutral soil, roughly between 6 and 7.5, though some prefer more extreme conditions.

Gardeners and farmers test soil pH to determine whether amendments like lime or sulfur are needed for optimal growing conditions.

Related

alkalization · acid rain · acidification · nitrogen fixation · fertilization · salinity · electrical conductivity · lime · amendments · coffee grounds · wood ash · crop rotation · mulching · earthworms · sulfur · nutrients · peat · acidic

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Opposites
acidic vs alkaline soil conditions

soil pHacidic soil

Ground below pH seven

alkaline soil · acid soil · low pH · peat soil

soil properties measured

soil pHsoil structure

Arrangement of earth particles

soil organic matter · soil compaction · soil temperature · soil drainage · soil fertility

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soil, pH

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