Lime Application Guide (Current pH → Target pH, Soil Type)
Estimate a lime application range from current pH, target pH, and soil type.
This is a simplified starting point when no soil test is available, to avoid over-application.
What this tool does
- Instant range from pH gap and soil type.
- Adjust for tillage depth and neutralizing value (ECCE/CCE).
- Reuse with URL parameters and recent calculations.
Girişlər
Range is shown with just pH gap and soil type.Required (fastest results)
pH (H2O) is ideal. Simple test kits are OK as a rough guide.
If target is below current, lime is not needed.
Choose the closest texture by feel.
Optional (detail settings)
Add detail only if needed.
Select if you know a more precise texture. If blank, we use the soil type above.
Deeper incorporation increases required amount (linear correction).
Auto-fills a typical neutralizing value.
Enter the neutralizing value/alkalinity % from the label.
All units are shown; only the primary unit is emphasized.
Nəticələr
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Qeydlər
- Avoid heavy single applications; consider split applications.
- Incorporate after application and re-test.
- If Mg is already high, be cautious with repeated dolomitic lime.
Recent calculations
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Basis and assumptions (simplified)
Because pH alone does not show buffering capacity, we present a range.
- Lime requirement is approximated from texture-based coefficients and the pH gap (proportional).
- Texture coefficients are derived from sources such as UC ANR tables and approximated for field use.
- Reference depth is 18 cm (~7 inches); correction is linear as depth_cm/18.
- Lower ECCE/CCE materials require proportionally higher amounts.
Approximate coefficients by texture (t/acre per 1 pH at 18 cm)
Rounded approximation of extended references. See references for details.
| Texture | pH 4.5→5.5 | pH 5.5→6.5 |
|---|---|---|
| Sand / sandy loam | 0.5 | 0.6 |
| Sandy loam | 0.8 | 1.3 |
| Loam | 1.2 | 1.7 |
| Silt loam | 1.5 | 2.0 |
| Clay loam | 1.9 | 2.3 |
| Muck/peat | 3.8 | 4.3 |
References
Cautions (read first)
- This tool provides a simplified estimate from soil pH and type. Required lime varies widely with buffering capacity (CEC, organic matter, clay minerals, etc.).
- If possible, prioritize a soil test (buffer pH / lime requirement).
- Incorporate after application and re-test to see if you reached target pH (apply more if needed).
- Optimal values vary by crop, region, and soil conditions; consult local experts if unsure.
[TRANSLATE THIS]
No soil test (only pH known)
You can calculate with minimal inputs, but pH alone cannot capture buffering capacity, so error is possible. If possible, prioritize soil testing (buffer pH / lime requirement) and use this only as a rough starting point.
Material differs (dolomitic lime, hydrated lime, etc.)
Neutralizing value (CCE/ECCE) differs by material. Enter the % from the label to correct the application amount. ECCE depends on both neutralizing value and particle size.
What units are supported?
kg/ha and lb/acre are linked, and kg/10a and t/ha are also shown.