Table 2.
Hoagland solution formulation modified from Epstein, E.39.
| Component | 0.5 Hoagland solution (optimum) [mg/l] | Stock ×10 [g/l] | Stock ×1000 [g/l] |
|---|---|---|---|
| Macroelements | |||
| Ca(NO3)2 · 4H20 | 720 | 7.2 | |
| KNO3 | 460.98 | 4.61 | |
| MgSO4 · 7H2O | 493 | 4.93 | |
| KH2PO4 | 272 | 2.72 | |
| Iron (Sprint 138 iron chelate) | 100 | 1.0 | |
| Microelements | |||
| H3BO3 | 2.86 | 2.09 | |
| MnCl2 · H2O | 1.8 | 1.8 | |
| ZnSO4 · 7H2O | 0.22 | 0.22 | |
| CuSO4 | 0.08 | 0.08 | |
| NaMoO4 · 2H2O | 0.017 | 0.017 | |
Deficient formulas were obtained by depriving the solution from either of the single-added minerals, focusing on minerals which essentially present a distinctively observable effect over the plant.