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Alkaline soil

Alkaline soil

E770/1156

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Credit

SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY

Caption

Soil testing. A pH meter showing the alkalinity of soil. Farmers and gardeners use pH meters to determine the pH level of soil to assess its suitability for different plants. A probe placed in the soil measures the amount of free hydrogen ions present, giving a value on the pH scale. A pH of 7 is neutral, above 7 is alkali and below 7 is acid. This meter displays a pH of 7-8, meaning that this is an alkaline soil. Some plants are intolerant of alkaline soils, and so corrective procedures may be necessary to decrease the soil pH to make it more suitable. For images showing pH tests for acid and neutral soils, see E770/1091 and E770/1092.

Release details

Model release not required. Property release not required.

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