Mastercote 13-13-13 4CTR
Mastercote 13-13-13 4CTR
Mastercote 13-13-13 4CTR is a well-balanced, control-release formula that delivers premium nutrition to plants over a 4 month period. Fertilizer can be used as a topdressing or incorporated directly into the growing medium.
Guaranteed Analysis
13-13-13 4CTR Guaranteed Analysis
| Total Nitrogen (N) 7.6% Ammoniacal Nitrogen 5.4% Nitrate Nitrogen | 13% |
| Available Phosphate (P2O5) | 13% |
| Soluble Potash (K2O) | 13% |
| Total Sulfur (S) | 5.20% |
| Boron (B) | 0.03% |
| Copper (Cu) | 0.06% |
| Iron (Fe) | 0.20% |
| Manganese (Mn) | 0.06% |
| Molybdenum (Mo) | 0.01% |
| Zinc (Zn) | 0.06% |
- Plant nutrients derived from: Ammonium nitrate, monoammonium phosphate, potassium nitrate, potassium sulfate, calcium phosphate, magnesium oxide, sodium borate, copper sulfate, iron EDTA, manganese sulfate, sodium molybdate and zinc sulfate.
Directions for Use
MASTERCOTE 13-13-13 should be applied according to the soil or growing medium conditions and specific requirements of the crop. 13-13-13 provides
the crops with nutrients over the specified release period. The application rate suggested is intended as a guideline based on average conditions. Increase application rate by 20% if the average soil temperature is 60°F. Decrease application rate by 20% if the average soil temperature exceeds 85°F. Leach the
growing medium prior to planting. Do not mix Mastercote with the growing medium prior to steam sterilization.
13-13-13 Temperature Effect on Rate of Release
| Average Soil Temperature | Longevity (months) |
|---|---|
| 60° F | 5 |
| 70° F | 4 |
| 80° F | 3 |
| 90° F | 2 |
13-13-13 Incorporation Rates
| Low | Medium | High | South Florida | Volume or Area of Mix |
|---|---|---|---|---|
| 2.5 oz | 4 oz | 6 oz | 7 oz | Per cubic foot |
| 4 lb | 7 lb | 10 lb | 12 lb | Per cubic yard |
| 2.5 kg | 4 kg | 6 kg | 7 kg | Per cubic meter |
| 8 lb | 12 lb | 18 lb | 21 lb | Per 100 sq ft |
| 0.4 kg | 0.6 kg | 0.9 kg | 1.2 kg | Per sq meter |
13-13-13 Topdressing Rates - Small Containers
| Container Size | Container/Cubic Yard | Low | Medium | High | South Florida |
|---|---|---|---|---|---|
| 5" std. pot | 800 | 2 g | 4 g | 6 g | 8 g |
| 6" std. pot | 450 | 3 g | 7 g | 10 g | 12 g |
| 1 gallon | 300 | 5 g | 11 g | 15 g | 25 g |
| 2 gallon | 140 | 13 g | 23 g | 32 g | 45 g |
| 3 gallon | 80 | 19 g | 40 g | 57 g | 75 g |
| 5 gallon | 50 | 30 g | 64 g | 90 g | 110 g |
| 7 gallon | 35 | 43 g | 90 g | 130 g | 160 g |
13-13-13 Topdressing Rates - Large Containers
| Container Size | Surface Area | Low | Medium | High | South Florida |
|---|---|---|---|---|---|
| 10 gallon | 1.4 sq ft | 63 g | 110 g | 157 g | 195 g |
| 15 gallon | 1.5 sq ft | 67 g | 120 g | 170 g | 210 g |
| 20 gallon | 2.3 sq ft | 100 g | 180 g | 260 g | 320 g |
| 25 gallon | 2.8 sq ft | 125 g | 220 g | 315 g | 400 g |
| 45 gallon | 4.8 sq ft | 215 g | 380 g | 540 g | 670 g |
| Larger containers | per sq ft | 45 g | 78 g | 112 g | 140 g |
The above recommendations should be regarded as a general guide only. Before implementing these recommendations the fertilization program should be tested on a small scale.
