How is fertilizer quantity calculated?

Fertilizer quantity is nutrient required divided by nutrient fraction in fertilizer grade. Example: urea needed = nitrogen required / 0.46.

Can I use acre and hectare both?

Yes. The calculator supports both acres and hectares and converts area internally.

Tools / Soil science

Estimate N, P₂O₅ and K₂O requirement and fertilizer quantity for your crop and land area.

Crop preset Area

Nitrogen, N (kg/ha) Phosphorus, P₂O₅ (kg/ha) Potassium, K₂O (kg/ha)

N source P source K source

Total nutrient need = recommended rate (kg/ha) × area in hectares.

Fertilizer needed (kg) = nutrient need (kg) ÷ nutrient fraction in the selected source.

Should all urea be applied at once?
Usually it is split into 2–3 doses by crop stage to reduce losses.

Can soil-test recommendations override this?
Yes. Always prioritise soil-test-based advisory when available.