OBJECTIVE FORESTRY

Detailed explanation-1: -Ag lime is more soluble in acid soils than in neutral or alkaline soils. The presence of CaCO₃ in soil is detected by the effervescence or “fizz” when a drop of strong acid is applied. The primary use of ag lime is to raise the pH of acid soils and reduce the concentration of aluminum (Al) in soil solution.

Detailed explanation-2: -Adding lime (Figure 1) increases soil pH (reduces acidity), adds calcium (Ca) and/or magnesium (Mg), and reduces the solubility of Al and Mn in the soil. aWhen soil pH is below the minimum value, crop yields may be reduced.

Detailed explanation-3: -Raising pH If a soil test indicates a pH below 6.5, the usual recommendation is for the application of ground limestone. In addition to having the ability to raise pH, limestone contains calcium.

Detailed explanation-4: -The magnesium content of limestone is especially important where soils are deficient in this essential plant nutrient. If a soil test indicates low magnesium, dolomitic limestone can be used to correct both the nutrient deficiency and pH. The value of limestone is in its ability to neutralize soil acidity.