Whats the best way to correct soils that are too acidic or too alkaline?
Soils that are marginally too acidic or too alkaline can be corrected by simply adding extra organic material. Soils that are decidedly too acidic or “sour” are usually corrected by adding ground limestone. Soils that are decidedly too alkaline or “sweet” are usually corrected by adding agricultural sulfur. A soil test would tell the extent of the excess acidity or alkalinity and it would also tell the quantities of material needed to correct the problem. If the soil is more or less reasonable, it would be better to use extra organic material. It does the job and it would also be safer. Both ground limestone and agricultural sulfur can burn plant roots when used in excess.
