Fertilizer Blend Calculator
Mix any combination of fertilizers and instantly analyze total Nitrogen, Phosphorus, and Potassium supplied per hectare — plus total cost. Supports 20+ fertilizers including Urea, DAP, MOP, SSP, TSP, SOP, NPK complexes, and organic manures.
Blend Analysis
| Fertilizer | Qty (kg/ha) | N (kg/ha) | P (kg/ha) | K (kg/ha) | Cost/ha |
|---|---|---|---|---|---|
| Urea | 100.0 | 46.00 | 0.00 | 0.00 | ₹650 |
| DAP (Di-Ammonium Phosphate) | 100.0 | 18.00 | 46.00 | 0.00 | ₹2,700 |
| MOP (Muriate of Potash) | 50.0 | 0.00 | 0.00 | 30.00 | ₹850 |
| TOTAL (per ha) | 250.0 kg | 64.00 | 46.00 | 30.00 | ₹4,200 |
| TOTAL (1.00 ha) | 250.0 kg | 64.0 | 46.0 | 30.0 | ₹4,200 |
Common Fertilizer Blends — NPK Analysis
| Blend Name | N (kg/ha) | P (kg/ha) | K (kg/ha) |
|---|---|---|---|
| Rice standard | 120 | 59.8 | 40.2 |
| Wheat standard | 143.8 | 59.8 | 40.2 |
| Balanced veg | 57 | 34 | 52 |
| Oilseed SSP route | 92 | 49.9 | 48 |
| Sugarcane | 249.5 | 99.8 | 120 |
Frequently Asked Questions
What is a fertilizer blend calculator?
A fertilizer blend calculator computes the total N, P, K nutrients you get when mixing different fertilizers in specific quantities. For example: if you apply 100 kg Urea + 50 kg DAP + 30 kg MOP per hectare, the blend calculator shows total N = 100×0.46 + 50×0.18 = 55 kg, total P = 50×0.46 = 23 kg, total K = 30×0.60 = 18 kg — and the total cost.
How do I create a custom fertilizer blend?
In the Fertilizer Blend tab: 1) Click 'Add Fertilizer' to add rows. 2) Select a fertilizer from the dropdown (Urea, DAP, MOP, SSP, 10-26-26, etc.). 3) Enter quantity in kg per hectare. 4) Add as many fertilizers as needed. 5) The calculator shows total N, P, K supplied and cost in real time. Compare against your crop's requirements to check adequacy.
What is a bulk blend fertilizer?
Bulk blend fertilizer (BB fertilizer) is a physical mixture of granular single-nutrient or compound fertilizers to achieve a specific NPK ratio for a crop or region. Common blends: 10-26-26 (cereals, basal), 12-32-16 (high-P crops), 14-35-14, 17-17-17 (balanced). Blending at the local level allows customization for soil test results and reduces cost compared to buying pre-made complex fertilizers.
Can I blend DAP + Urea?
Yes, DAP + Urea is the most common blend in Indian agriculture. However, do not physically mix them before applying as this can cause nitrogen losses (ammonia volatilization). Apply DAP as basal, then Urea in splits. If mixing is unavoidable, apply the blend immediately without storage. Never blend Urea with SSP as this causes chemical reaction and nutrient loss.
What is the best NPK blend for vegetable gardens?
For vegetable gardens: A balanced 14-14-14 or 17-17-17 complex is a good starting point. Tomatoes and fruiting vegetables need higher K (10-10-20 type or add extra MOP). Leafy vegetables need higher N (add Urea or CAN). Root vegetables need higher P and K. Use the blend calculator to check your mix against vegetable NPK needs (typically 150-100-100 kg/ha).
How do I calculate NPK in a fertilizer blend?
For each fertilizer in the blend: N contributed = Quantity (kg) × N% / 100. P contributed = Quantity (kg) × P% / 100. K contributed = Quantity (kg) × K% / 100. Sum all contributions. Example: 200 kg Urea (46%N) + 130 kg DAP (18%N, 46%P) = N: 200×0.46 + 130×0.18 = 92+23.4 = 115.4 kg; P: 130×0.46 = 59.8 kg; K: 0.