Soil pH is one of the most important chemical characteristics of the soil. For example, soil pH can affect availability of plant nutrients. In addition, the soil pH can affect the performance of preemergence herbicides, activity of microorganisms, the need for lime, soil bacteria activity, the best crop to be grown, and other characteristics.

[This lesson, as well as the other nine lessons in the Soils series, is taken from the "Soils Home Study Course," published in 1999 by the University of Nebraska Cooperative Extension.]

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