NPK nutrient mapping
Stop buying one blend for ground that needs three.
We measure nitrogen, phosphorus and potassium at many geo-tagged points across your farm and turn them into a map — so you can see which blocks are short of what before you spend.
Available now · quoted per farmWhy it matters
One composite soil sample from the middle of a field gives you an average, and averages hide the problem. The corner that was an old cattle boma is loaded with phosphorus and potassium; the eroded slope is starved of everything. Spreading the same DAP and CAN over both wastes money on one and under-feeds the other.
An NPK map shows the variation. It lets the same fertiliser budget go where it changes the yield, and it tells you which nutrient is actually limiting in each block — the one that decides the harvest.
Method
How we do it
- 1
Plan the grid
We lay out survey points across every block, denser where slope, colour, drainage or past yield vary.
- 2
Measure in the field
NPK is measured at root depth at each point with calibrated probes; selected points are sent for laboratory confirmation.
- 3
Interpolate
Point readings are turned into continuous maps and split into management zones.
- 4
Recommend
Map plus crop plus target yield gives a blend and a rate per block.
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 |
|---|---|
| Low N across the farm, high P and K on old boma ground | Nitrogen top-dressing everywhere, but skip the phosphate blend on the boma blocks |
| Low P on one slope | Phosphate where it is short — and check pH, because acid soil locks P up |
| K falling year on year in a block | Potassium replacement before it limits yield |
When to order it
- Before the main season’s fertiliser purchase
- When yields vary across a field for no obvious reason
- When taking on new or leased land
- Every few seasons, to track improvement
Questions
NPK nutrient mapping: FAQ
How many points do you measure?
It depends on farm size and how variable the land looks. Small, uniform plots need few points; large farms with slopes and old homestead sites need more. The survey plan is agreed before we start.
Is field measurement as good as a lab?
Field probes give many readings quickly, which is what makes a map possible. We confirm selected points in a laboratory so the map is calibrated to lab-grade numbers.
Do I need any equipment installed?
No. NPK mapping is a stand-alone service.
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.