An acidic soil can be neutralized by the addition of

An acidic soil can be neutralized by the addition of wood ash. Wood ash contains calcium, magnesium, and potassium compounds, which can react with the acidic soil and neutralize it. The reaction forms water and salts, which help to increase the soil's pH, making it less acidic. Additionally, wood ash also contains nutrients such as phosphorus and potassium, which are essential for plant growth. However, it is important to note that excessive use of wood ash can lead to an alkaline soil, which is also not ideal for plant growth.