A soil with low pH value can be improved by the addition of

The addition of calcium carbonate can improve a soil with a low pH value. Soil pH is a measure of the soil's acidity or alkalinity, with a pH of 7 being neutral, below 7 acidic, and above 7 alkaline. Calcium carbonate is an alkaline substance that reacts with soil acidity, raising the pH level towards a more neutral or alkaline range. By adding calcium carbonate to the soil, the soil becomes less acidic, which can help plants grow better because most plants prefer a slightly acidic to neutral soil pH. Additionally, the calcium in calcium carbonate can improve soil structure, making it easier for plant roots to penetrate and access water and nutrients.