Table 1 Approximate amount (oz.) of epsom salts to add per 100 gallons of water to make 208 ppm or 182 ppm of supplemental magnesium fertilizer.
| Injection Ratio | 208 ppm Mg | 182 ppm Mg |
| 1:300 | 8400 | 7350 |
| 1:200 | 5600 | 4900 |
| 1:150 | 4200 | 3675 |
| 1:128 | 3584 | 3136 |
| 1:100 | 2800 | 2450 |
| 1:50 | 1400 | 1225 |
| 1:30 | 840 | 735 |
| 1:24 | 672 | 588 |
| 1:15 | 420 | 367.5 |
Table 2 Amount (fl. oz.) of stock solution*/ 50 gallons of concentrate to make 0.1 or 0.2 ppm supplemental Mo fertilizer.
| Injection Ratio | 0.1 ppm Mo** | 0.2 ppm Mo*** |
| 1:300 | 22.50 | 45.00 |
| 1:200 | 15.00 | 30.00 |
| 1:150 | 11.25 | 22.50 |
| 1:128 | 9.60 | 19.20 |
| 1:100 | 7.50 | 15.50 |
| 1:50 | 3.75 | 7.50 |
| 1:30 | 2.25 | 4.50 |
| 1:24 | 1.80 | 3.60 |
| 1:15 | 1.13 | 2.26 |
* To make Mo stock solution dissolve 1 lb. of ammonium molybdate in 5 gallons of water.
** For use with constant liquid feed.
*** For use with intermittent feed.
Table 3.Parts per million (ppm) of nutrient element in solution when specified fertilizer compound is disolved in water.
| Fertilizer | Fertlizer & Element Percentage | Amount/Gal | N | P | K | Ca | Mg | S | Cl |
| Potassium Nitrate | 13.75-0-44.5 (36.9K) | 1g | 36 | 97 | – | – | – | – | – |
| Potassium Sulfate | 0-0-50 (41.5K, 17S) | 1g | – | – | 110 | – | – | 45 | – |
| Muriate of Potash | 0-0-60 (49.8K, 45Cl) | 1g | – | – | 131 | – | – | – | 119 |
| Mono Potassium Phosphate | 0-22.8-28.7 | 1g | – | 53 | 75 | – | – | – | – |
| K-Mag of Sul-Po-Mag | 0-0-22 (18K, 11Mg, 22S) | 1g | – | – | 48 | – | 29 | 58 | – |
| Mono Calcium Phosphate | 0-46-0 (20P, 13Ca) | 1g | – | – | – | 34 | – | – | – |
| Calcium Nitrate | 15.5-0-0 (19Ca) | 1g | – | – | – | 50 | – | – | – |
| Ammonium Nitrate | 33.5-0-0 | 1g | 41 | – | – | – | – | – | – |
| Ammonium Sulfate | 21-0-0 (24S) | 1g | 88 | – | – | – | – | – | – |
| Urea | 46-0-0 | 1g | 55 | – | – | – | – | 63 | – |
| Nitric Acid | 7)% HNO3 (15.5N) | 1g | 121 | – | – | – | – | – | – |
| Diammonium Phosphate | 18-46-0 (20P) | 1g | 41 | 53 | – | – | – | – | – |
| Phosphoric Acid | 75%H3PO4 (0.363g.P/ml) | 1 ml | 47 | 96 | – | – | – | – | – |
| Gypsum (Calcium Sulfate) | (18.6Ca, 14.9S) | 1g | – | – | – | 49 | – | 39 | – |
| Epsom Salts | (9.9Mg, 13S) | 1g | – | – | – | – | 26 | 34 | – |
Note: For practical purposes, 3.5 ounces of fertilizer disolved in 100 gallons of water yields the same ppm of element in solution as those given for 1g./gallon. (28.35gms.=1 ounce)
Table 4.Fertilizer sources for pointsettia production
| Name & Formula of Material | N-P-K | Analysis Others |
| Ammonium Chloride NH4Cl |
25-0-0 | 0 |
| Ammonium Nitrate NH4NO3 |
33.5-0-0 | 0 |
| Ammonium Phosphate (di) (NH4)2HPO4 |
21-53-0 | 0 |
| Ammonium Phosphate (mono) NH4H2PO4 |
11-48-0 | 1.4% Ca, 2.6% S |
| Ammonium Sulfate (NH3)2SO3 |
20-0-0 | 24% S |
| Calcium Nitrate Ca(NO3)2 |
15-0-0 | 37% S |
| Sodium Nitrate NaNO3 |
16-0-0 | 0 |
| Urea CO(NH2)2 |
45-0-0 | 0 |
| Urea-Formaldehyde | 38-0-0 | 0 |
| Superphosphate CaH4(PO4)2 |
0-20-0 | 18% Ca |
| Treble Phosphate CaH4(PO4)2 |
0-42-0 | 12% S |
| Phosphoric Acid H3PO4 |
0-52-0 | 12% Ca |
| Potassium Chloride KCl |
0-0-62 | 0 |
| Potassium Nitrate KNO3 |
13-0-44 | 0 |
| Potassium Sulfate K2SO4 |
0-0-53 | 0 |
| MagAmp-Magnesium | 7-40-6 | 18% S |
| Ammonium Phosphate | 0 | 0 |
| Magnesium Sulfate MgSO47H2O |
0 | 10% Mg |
| Magnesium Nitrate Mg(NO3)2 6H2O |
0 | 9.5% Mg |
| Gypsum CaSO42H2O |
0 | 23% Ca |
| Manganese Sulfate MnSO4 |
0 | 28% Mn |
| Boric Acid H3BO3 |
0 | 17% B |
| Copper Sulfate CuSO45H2O |
0 | 25% Cu |
| Iron Sulfate FeSO47H2O |
0 | 20% Fe |
| Iron Chelates | 0 | Various % Fe |
| Ammonium Molybdate (NH4)6 Mo7O22H2O |
0 | 53% Mo |
| Zinc Sulfate ZnSO47H2O |
0 | 36.4% Zn |
