Calcium carbonate is used to control soil acidity.
Many plants (especially grass like plants) do not grow well in acidic soil. Also, unnaturally high levels of acidity in a large amount of soil can leach into the water table and taint it.
Chemicals such as iron sulphates or aluminum sulphate can be used to control the pH of soil. Organic matter such as plant litter, manure or compost are also other ways.
pH
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Many plants (especially grass like plants) do not grow well in acidic soil. Also, unnaturally high levels of acidity in a large amount of soil can leach into the water table and taint it.
it raises soil acidity pH
As in all acid-base (alkali) reactions, it will reduce the acidity of the soil and, if there is an excess of base to acid, it can make the soil become alkaline. The soil will be less acidic if base is less than acidity, become neutral (if base = acidity), or become alkaline if base is greater than acidity.
If the acidity of soil is too high, the germination of a seed will either be slowed or the seed may not grow at all. Some plants are very sensitive to the level of acidity in the soil and need to be treated carefully.
Chemicals such as iron sulphates or aluminum sulphate can be used to control the pH of soil. Organic matter such as plant litter, manure or compost are also other ways.
pH
Most commonly limestone is used to decrease acidity.
Crushed limestone is added to soil to reduce its acidity.
The acidity of the soil. Some plants like more acidic soil while others prefer more alkaline. By measuring the pH, you are able to adjust the soil's acidity accordingly.
Acidity (and other) tests for soil are best done by professionals. Usually, a county or parish will have an agricultural extension agent who can give you information on how to collect soil samples, and where to deliver them for testing.
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