Table 3 Ratios between macronutrients in the solutions of Dendrobium Tubtim Siam and Phalaenopsis Taisuco Swan and the solution by Hoagland and Arnon
Ratios | Nutrient solution proposed by Hoagland & Aenon (1950) | Nutrient solutions proposed from the optimal concentrations of nutrients | |
|---|---|---|---|
Dendrobium Tubtim Siam | Phalaenopsis Taisuco Swan | ||
B:Cu | 154.33 | 42.60 | 113.82 |
B:Fe | 2.58 | 1.09 | 2.26 |
B:Mn | 5.09 | 0.61 | 1.14 |
B:Zn | 66.14 | 1.06 | 2.25 |
Cu:Fe | 0.017 | 0.03 | 0.02 |
Cu:Mn | 0.03 | 0.01 | 0.01 |
Cu:Zn | 0.43 | 0.02 | 0.02 |
Fe:Mn | 1.97 | 0.56 | 0.50 |
Fe:Zn | 25.60 | 0.97 | 1.00 |
Mn:Zn | 13.00 | 1.74 | 1.97 |