19-19-19 Triple 19 Rate Calculator
Calculate 19-19-19 triple-nineteen fertilizer product per acre from a target nutrient rate, with total pounds, bags and bulk tons.
How This Calculation Works
Product pounds per acre equals the target nutrient rate divided by the analysis percentage, times 100. For 80 pounds of nitrogen per acre from 19-19-19, that is about 421 pounds of product per acre. The same product supplies 80 pounds each of phosphate and potash.
Field Calibration & Rate Reference Chart
| Analysis | Nutrient % | Target lb/ac | Product lb/ac |
|---|---|---|---|
| 46-0-0 Urea | 46 | 100 | 217 |
| 46-0-0 Urea | 46 | 120 | 261 |
| 34-0-0 AN | 34 | 100 | 294 |
| 28-0-0 UAN | 28 | 120 | 429 |
| 18-46-0 DAP | 46 | 60 | 130 |
| 11-52-0 MAP | 52 | 60 | 115 |
| 0-0-60 Potash | 60 | 80 | 133 |
| 10-10-10 | 10 | 60 | 600 |
| 19-19-19 | 19 | 80 | 421 |
| 6-4-0 Milorganite | 6 | 48 | 800 |
Common Questions
How much 19-19-19 do I apply per acre?
Divide the target nutrient rate by 0.19 to get product per acre. An 80 pound nitrogen target needs about 421 pounds of 19-19-19 per acre. That product also supplies 80 pounds each of phosphate and potash.
Is 19-19-19 the same as triple 19?
Yes, triple 19 is the common name for a 19-19-19 analysis. The three equal numbers mean equal percentages of nitrogen, phosphate and potash. It is a high-analysis balanced fertilizer.
Can 19-19-19 burn plants?
It has a relatively high salt index, so applying too much near roots or foliage can cause burn. Water it in after application and keep it out of direct contact with seed. Split applications reduce the risk on sensitive crops.
Is 19-19-19 good for vegetables?
It suits vegetables that need all three nutrients, especially during early growth. A soil test should confirm the need, because many gardens already have adequate phosphorus. Side-dress with nitrogen later if the crop demands it.