pH and the concentration of nutrients in the soil can be determined by ______.
soil testing
Soil can be tested for its pH, the presence and the concentration of essential elements, etc. by a series of soil testing procedures. It is an important step in farming as it tells the farmers which elements are high and which ones are depleted in the soil. Accordingly, fertilisers can be added to maintain the soil fertility. It also helps farmers to plan their crops based on the element (nutrient) availability.