What is the main reason for applying lime to soil?

What is the main reason for applying lime to soil?

• A. Soil moisture
• B. The acidity
• C. Nutrient deficiency
• D. Soil salinity

Answer: (C)

When soil is too acidic, plants can’t take up nutrients effectively and toxic aluminum can hinder root growth. Adding lime neutralizes acidity, raising the soil pH toward a neutral range. This creates a better environment for roots, improves microbial activity, and makes most nutrients more available. Lime also adds calcium (and magnesium in dolomitic lime), which helps with soil structure and cation balance. Think of lime as a pH adjuster rather than a direct fix for a specific nutrient deficiency. If a nutrient is truly deficient, you would address that with targeted fertilization; lime simply creates conditions that allow nutrients to be taken up more readily. The other options—soil moisture and soil salinity—aren’t what lime is intended to correct.

When soil is too acidic, plants can’t take up nutrients effectively and toxic aluminum can hinder root growth. Adding lime neutralizes acidity, raising the soil pH toward a neutral range. This creates a better environment for roots, improves microbial activity, and makes most nutrients more available. Lime also adds calcium (and magnesium in dolomitic lime), which helps with soil structure and cation balance.

Think of lime as a pH adjuster rather than a direct fix for a specific nutrient deficiency. If a nutrient is truly deficient, you would address that with targeted fertilization; lime simply creates conditions that allow nutrients to be taken up more readily. The other options—soil moisture and soil salinity—aren’t what lime is intended to correct.