How to Calculate Fertilizer for Any Crop

 Fertilizer application isn’t guesswork—it's a science! To maximize yield while minimizing waste, you need to calculate the right dose based on:

✅ Crop nutrient requirement

✅ Target yield

✅ Soil test report

✅ Nutrient content in the fertilizer

🔍 Here’s the Simple Formula:

Required Fertilizer (kg/ha) = (Recommended Nutrient Dose / % Nutrient in Fertilizer) × 100

Let’s break it down with an example for Wheat (per hectare):

💡 Recommended Dose:

• Nitrogen (N): 120 kg

• Phosphorus (P₂O₅): 60 kg

• Potassium (K₂O): 40 kg

💼 Using:

• Urea (46% N)

• DAP (18% N, 46% P₂O₅)

• MOP (60% K₂O)

🔸 DAP for P₂O₅:

60 / 46 × 100 = 130 kg DAP

(NOTE: This gives 23.4 kg N too)

🔸 Urea for remaining N:

(120 - 23.4) / 46 × 100 = 209 kg Urea

🔸 MOP for K₂O:

40 / 60 × 100 = 67 kg MOP

📌 Final Fertilizer Requirement (per ha):

✔️ Urea: 209 kg

✔️ DAP: 130 kg

✔️ MOP: 67 kg