The recommended amount of lime per acre depends on soil pH and type, typically ranging from 1 to 5 tons per acre.
Applying lime to soil helps neutralize acidity and improve nutrient availability for plants. The amount needed varies based on your soil's current pH, target pH, and soil type. Sandy soils require less lime than clay soils to achieve the same pH change. Most agricultural recommendations suggest 1-2 tons per acre for sandy soils and up to 5 tons per acre for clay soils. Testing your soil pH is essential before applying lime to determine the exact amount needed.
Factors affecting lime application rates
- Current soil pH level
- Desired target pH level
- Soil texture (sand, silt, or clay content)
- Soil buffer capacity
- Type of lime product used (calcitic vs dolomitic)
Comparison of lime application rates by soil type
| Soil Type | pH Change Needed | Lime Required (tons/acre) |
|---|---|---|
| Sandy | 1.0 unit | 0.5 - 1.0 |
| Loamy | 1.0 unit | 1.0 - 2.0 |
| Clay | 1.0 unit | 2.0 - 5.0 |
Methods of applying lime
- Broadcasting - spreading lime evenly across the surface
- Incorporation - mixing lime into the soil
- Variable rate application - applying different rates based on soil maps
Cost considerations for lime application
- Lime cost: $30-50 per ton
- Application cost: $5-15 per acre
- Total cost range: $100-400 per acre depending on rate
Timing and frequency of lime application
Lime should be applied 2-6 months before planting to allow time for pH adjustment. In most cases, lime remains effective for 3-5 years before reapplication is needed. Fall application is often preferred as it allows more time for the lime to react with the soil before spring planting.