Nitrogen
Apply up to 70 kg N/ha. Broadcast 35 kg N/ha and all the required phosphate and potash before planting. The remainder of the nitrogen should be side-dressed 3-4 weeks after transplanting.
Phosphorus and Potassium
Test the soil to determine phosphorus and potassium requirements.
Table X, Phosphorus and Potassium Requirements for Eggplant on Mineral Soils |
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| Legend: HR = High Response MR = Medium Response LR = Low Response RR = Rare Response NR = No Response | |||||
| Phosphorus | Potassium | ||||
| Sodium Bicarbonate Phosphorus Soil Test (ppm) | Rating | Phosphate (P205) Required kg/ha | Ammonium Acetate Potassium Soil Test (ppm) | Rating | Potash (K2O) Required (kg/ha) |
| 0-3 | HR | 270 | 0-15 | HR | 270 |
| 4-5 | HR | 260 | 16-30 | HR | 250 |
| 6-7 | HR | 250 | 31-45 | HR | 230 |
| 8-9 | HR | 240 | 46-60 | HR | 200 |
| 10-12 | HR | 230 | 61-80 | HR | 170 |
| 13-15 | HR | 220 | 81-100 | HR | 130 |
| 16-20 | HR | 200 | 101-120 | MR | 100 |
| 21-25 | HR | 170 | 121-150 | MR | 80 |
| 26-30 | MR | 140 | 151-180 | MR | 50 |
| 31-40 | MR | 110 | 181-210 | LR | 0 |
| 41-50 | MR | 80 | 211-250 | RR | 0 |
| 51-60 | LR | 50 | >250 | NR | 0 |
| 61-80 | RR | 0 | |||
| 80+ | RR | 0 | |||
| For transplanted tomatoes, peppers and eggplants, apply a starter solution, such as 1 L of 10-34-0 per 100 L of water, or 1 L of 6-24-6 per 75 L at planting. | |||||