What material should be added to a soil which is too basic? How does this materid help in reducing the basic nature of the soil?

What material should be added to a soil which is too basic? How does

1.	What material should be added to a soil which is too basic? How does this materid help in reducing the basic nature of the soil?
Answer» Decreasing the PH of alkaline soilAcidifying FERTILIZERS, such as AMMONIUM sulfate, ammonium nitrate and UREA, can help to reduce the pH of a soil because ammonium oxidises to form nitric acid. Acidifying organic materials include peat or sphagnum peat moss.