| Crop | DBT Rate (kg/ha) | Equivalent P₂O₅ (kg/ha) | |------|----------------|--------------------------| | Wheat / Barley | 100–150 | 46–69 | | Maize | 150–250 | 69–115 | | Rice (direct seeded) | 100–120 | 46–55 | | Pulses (chickpea, lentil) | 60–100 | 28–46 | | Oilseeds (canola, sunflower) | 120–180 | 55–83 | | Potato | 200–300 | 92–138 |
Below is a simplified snippet from the fact_fertilizer_recommendations.sql model, demonstrating how we calculate the final Nitrogen recommendation: dbt fertilizer app