21-6-20 All Purpose Formula
21-6-20 All Purpose Formula
21-6-20 All Purpose formula is designed for application with any sprayer, injector or proportioner. It is safe for all growing plants and performs especially well on plants that thrive in growing media with higher acidity levels.
Guaranteed Analysis
21-6-20 All-Purpose Guaranteed Analysis
| Total Nitrogen (N) 13.39% Nitrate Nitrogen 7.61% Ammoniacal Nitrogen | 21% |
| Available Phosphate (P2O5) | 6% |
| Soluble Potash (K2O) | 21% |
| Magnesium (Mg) (Total) 0.65% Water Soluble Magnesium (Mg) | 0.65% |
| Boron (B) | 0.02% |
| Copper (Cu) 0.02% Chelated Copper (Cu) | 0.02% |
| Iron (Fe) 0.095% Chelated Iron (Fe) | 0.095% |
| Manganese (Mn) 0.048% Chelated Manganese (Mn) | 0.048% |
| Molybdenum (Mo) | 0.01% |
| Zinc (Zn) 0.05% Chelated Zinc (Zn) | 0.05% |
- Plant nutrients derived from: Potassium Nitrate, Ammonium Phosphate, Ammonium Nitrate, Magnesium Nitrate, Boric Acid, Copper EDTA, Iron DTPA, Manganese EDTA, Sodium Molybdate, Zinc EDTA.
- Potential Acidity: 364 Lbs. Calcium Carbonate per ton.
- Maximum Solubility: 4 Lbs. Per gallon.
- Caution: Some crops may be injured by application of Boron.
- This fertilizer is to be used only on soils that respond to Molybdenum.
- Crops high in Molybdenum are toxic to ruminants
Directions for Use
21-6-20 All-Purpose Injector Ratios
Ounces of MASTERBLEND 21-6-20 All-Purpose per gallon of concentrate.| Ppm Nitrogen | 1:15 Injector Ratios | 1:100 Injector Ratios | 1:200 Injector Ratios | EC (mS/cm) |
|---|---|---|---|---|
| 50 | 0.48 | 3.22 | 6.44 | 0.28 |
| 100 | 0.95 | 6.44 | 12.9 | 0.56 |
| 150 | 1.45 | 9.65 | 19.3 | 0.84 |
| 200 | 1.93 | 12.9 | 25.7 | 1.12 |
| 250 | 2.41 | 16.1 | 32.2 | 1.4 |
| 300 | 2.9 | 19.3 | 38.6 | 1.68 |
| 350 | 3.38 | 22.5 | 45 | 1.96 |
| 400 | 3.86 | 25.7 | 51.5 | 2.24 |
21-6-20 All-Purpose Ratios by Crop Type
| Crop Type | Constant Feed Ppm – N | Periodic Feed Ppm – N |
|---|---|---|
| Bedding Plants | 100-200 | 200-250 |
| Containerized Woody Ornamentals | 75-125 | 200-350 |
| Cut Flowers | 175-225 | 300-450 |
| Potted Chrysanthemums | 250-350 | 350-400 |
| Potted Tropical Foliage | 125-250 | 250-300 |
| Potted Geraniums | 250-300 | 350-400 |
| Potted Poinsettias | 200-350 | 375-400 |
| Vegetable Seedlings | 25-75 | 75-150 |
Downloads
Injection Ratios
