pH & lime mapping
pH quietly decides whether your fertiliser works at all.
In acid soil, phosphorus is locked up and other nutrients become harder for the crop to take up. A pH map shows exactly where lime unlocks the fertiliser you are already paying for.
Available now · quoted per farmWhy it matters
Acid soils are widespread in Kenya’s high-rainfall farming areas, and years of acidifying fertilisers push them further. A farmer adding more and more DAP to acid ground is buying phosphorus the crop cannot reach.
Liming fixes it — but lime is bulky and not cheap, and spreading it on ground that does not need it is wasted money. The map shows the blocks where it will pay.
Method
How we do it
- 1
Survey
pH measured at geo-tagged points at root depth.
- 2
Confirm
Selected points confirmed in a laboratory, including buffer pH for lime requirement.
- 3
Plan
Lime rate per block, with timing ahead of planting.
From finding to action
What the results change on the farm
Typical examples of how a finding turns into a decision.
| If the survey finds… | …the decision is |
|---|---|
| pH below 5.5 on the upper blocks | Lime these blocks ahead of planting; hold back phosphate until pH is corrected |
| pH fine across most of the farm | Save the lime budget — spend it on nutrients instead |
When to order it
- Before liming
- When phosphate responses are poor
- On high-rainfall farms every few seasons
Questions
pH & lime mapping: FAQ
How long does lime take to work?
Lime reacts over weeks to months, depending on how fine it is and how well it is worked in, so it should go on well before planting.
Get your farm mapped.
Mapping is quoted per farm by size and needs no installed equipment. Book a free visit and we will plan the survey with you.