Nutrient report
Central plateau (Taupō, Rotorua) — needs higher P; watch K, Co, Se.
Enter what your report shows — leave the rest blank. Nothing is assumed.
Base saturation (optional) ▾
Drives the maintenance estimate — how much P, K and S your production removes each year. Set to 0 for dry stock / cut-and-carry.
- pH5.7(optimal 5.8–6.2)
- low
Below optimal — aim to build toward 5.8+.
- Olsen P28 mg/L(optimal 35–45)
- low
Below optimal — aim to build toward 35+.
- Potassium (QTK)6(optimal 7–10)
- low
Below optimal — aim to build toward 7+.
- Sulphate S9 ppm(optimal 10–12)
- low
Below optimal — aim to build toward 10+.
- Magnesium (QTM)12(optimal 8–10)
- high
Above optimal — no need to add magnesium; hold or skip.
- Calcium base sat.55 %(optimal 60–70)
- low
Below optimal — aim to build toward 60+.
- Magnesium base sat.18 %(optimal 10–15)
- high
Above optimal — no need to add magnesium; hold or skip.
- Potassium base sat.4 %(optimal 3–5)
- optimal
In the optimal band — maintain.
- Sodium base sat.1 %(optimal 0–2)
- optimal
In the optimal band — maintain.
About 1.1 t/ha of good lime (>80% CaCO₃) to lift pH from 5.7 to ~5.8.
Optimal for this soil is 5.8–6.2. Over-liming can lock up trace elements — aim for the band, not above it.
Capital — lift what's deficient
superphosphate. Lift Olsen P from 28 to ~35. Spread over 2–3 years, not all at once.
potash (muriate of potash). Lift QTK from 6 to ~7. Split big dressings to limit leaching and grass-staggers risk.
sulphur super / elemental S. Lift sulphate-S from 9 to ~10. Sulphate is mobile — little-and-often beats one big hit.
Maintenance — replace yearly removal
superphosphate. Replaces P removed in product plus soil immobilisation. Super also supplies sulphur.
potash (muriate of potash). Replaces K removed and leached. Most grazed K is recycled in dung/urine.
sulphur super / elemental S. Replaces mobile sulphur lost to leaching, especially in high rainfall.
Indicative rates from standard NZ figures — soil reserves, P-retention and stocking vary a lot. Confirm product and rate with your fertiliser rep before ordering.
Indicative agronomic decision support — optimal ranges, lime and fertiliser coefficients follow NZ (FANZ / Ravensdown / Ballance) guidance and are being confirmed. Not nitrogen-loss / regulatory modelling, and not a substitute for your fertiliser rep or consultant.