Can oyster shells or other sea shells be used for lime. Conversion rates for liming.
Lime is calcium or magnesium compounds ground into powder.
Usually the calcium and magnesium come from limestone rock. They could come from marl, oyster shells, or industrial byproducts. Lime makes soil pH higher. The best, simplest, and surest way is to take a soil test. Then compare the pH on the soil analysis report with the ideal pH for the crop you want to grow.