Effect of Organic Materials on Soil Acidity

doi:10.11924/j.issn.1000-6850.casb16100077

Abstract

Abstract: Pot and soil incubation experiment were conducted to study the effect of organic materials (straw, pig manure, peat and lignin) on soil acidity. The results showed that the application of straw decreased the pH in calcareous soil and increased the pH in acidic red soil in the soil incubation experiment and pot experiment with leafused lettuce, but this effect decreased with time. The application of straw did not affect the pH in calcareous soil and yellow brown soil in pot experiment with cherry-red radish and winter wheat significantly. The pH in acidic red soil increased for the first harvest and decreased for the second harvest after the application of straw in the pot experiment with cherry-red radish. Soil pH did not vary with time after the application of pig manure, peat and lignin. The application of pig manure decreased the pH in calcareous soil and increased the pH in acidic red soil and yellow brown soil. The application of peat decreased the pH in calcareous soil and yellow brown soil and it did not affect the pH in acidic red soil significantly. In the pot experiment with cherry-red radish, the application of lignin decreased the pH in calcareous soil and increased the pH in acidic red soil for the first harvest, but it did not vary significantly for the second harvest. In summary, only the application of pig manure could decrease the pH in calcareous soil, increase the pH in acidic red soil and yellow brown soil and it could be used as an effective amendments to improve soil acidity.

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