see also calcium carbonate`
will raise the soil pH; Fairly cheap to purchaser; Quick effect on soil.
Limitations: Careful calculation of application rate required so as not to under or over dose the soil.
Environmental: Implication of energy used in processing; Once applied, effect lasts for several years.
Health and Safety: Burning of eyes Or exposed skin, Should not breathe in dry powder.
Timing of application: Autumn – and allow to be washed into the soil; Must not come into contact with farmyard manures.
Effectiveness of the material: Very effective; You need to apply more carbonate to have the same effect as hydroxide.