Soil Acidity and Liming

Uchida, R. and Hue, N.V. (2000) Soil Acidity and Liming. In: Plant Nutrient Management in Hawaii's Soils: Approaches for Tropical and Subtropical Agriculture. University of Hawaii, pp. 101-111. ISBN 1-929235-08-8

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The pH scale, ranging from 0 to 14, is used to indicate acidity and alkalinity. pH is a measure of the concentration of hydrogen ions (symbol = H+) in the water contained in the soil. A pH of 7.0 is neutral, values below 7 are acidic, and those above 7 are alkaline (basic). The lower the pH, the more acid the soil. Each unit pH drop indicates ten times more acidity. For example, pH 5 has 10 times more acidity than pH 6, and 100 times more acidity than pH 7. Most Hawaii soils have pH ranging from 4 to 9. For comparison, here are the pH values of some common liquids.

Item Type: Book Section
Additional Information: SNNigam Collection
Uncontrolled Keywords: Hawaii, plant nutrition, soil management, soil-plant interactions
Author Affiliation: College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa.
Subjects: Soil Science and Microbiology
Divisions: General
Depositing User: Mr Balakrishna Garadasu
Date Deposited: 02 Apr 2013 10:38
Last Modified: 02 Apr 2013 10:38

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