Nutrient Deficiency Calculator

Assess soil nutrient status and identify deficiency or excess of N, P, K, pH and organic matter.

Nitrogen level (mg/kg)

Phosphorus level (mg/kg)

Potassium level (mg/kg)

pH level

Organic matter (%)

How to Use the Nutrient Deficiency Calculator

Enter N, P, K levels from your soil test results.
Enter pH and organic matter content.
Click Calculate to get the assessment.
Use the results to plan fertilizer application.

Casi d'Uso

•Diagnosing soil nutrition before planting.
•Planning a fertilizer program.
•Monitoring soil fertility over time.
•Advising farmers and agronomists.

Formula

Assessment by threshold values: N: low <20, high >60 mg/kg; P: low <15, high >50; K: low <100, high >300; pH: low <6.0, high >7.5; OM: low <2%, high >5%.

Domande Frequenti

How do I interpret the results?

'Low' means deficiency — fertilization is needed. 'Adequate' is the norm. 'High' means excess, which can cause toxicity.

What units should I use for nutrients?

Nitrogen, phosphorus, and potassium are entered in mg/kg (or ppm), as in standard agrochemical analyses.

Is a soil test required?

Yes, for accurate results use data from a laboratory soil analysis.