Jack's Professional 15-0-15 Dark Weather Water Soluble Fertilizer, 25 lbs.
Product details
| Management number | 232556367 | Release Date | 2026/06/21 | List Price | US$12.24 | Model Number | 232556367 | ||
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| Category | |||||||||
Jack's Dark Weather formula is one of our most popular when growers are looking for a way to increase calcium into their fertility program. An ideal product for growers who want a non-phosphorus, high nitrate product with calcium. Alternate with 20-10-20 Peat-Lite or use as a "finisher" for flowering plants like poinsettias. This formula has the traditional micronutrient levels needed for general production.
For Use On: All plants
Jacks Professional 15-0-15 Dark Weather Water Soluble Fertilizer Guaranteed Analysis
- Total Nitrogen (N)......15%
- 0.58% Ammoniacal Nitrogen
- 12.12% Nitrate Nitrogen
- 2.3 Urea Nitrogen
- Soluble Potash (K2O).......15%
- Calcium (Ca).......11%
- Boron (B).......0.0068%
- Copper (Cu)........0.0036%
- 0.0036% Chelated Copper (Cu)
- Iron (Fe)........0.05%
- 0.05% Chelated Iron (Fe)
- Manganese (Mn)........0.025%
- 0.025% Chelated Manganese (Mn)
- Molybdenum (Mo).......0.0009%
- Zinc (Zn).......0.0025%
- 0.0025% Chelated Zinc
Derived From: Urea, Calcium Nitrate, Boric Acid, Iron EDTA, Manganese EDTA, Zinc EDTA, Copper EDTA, Ammonium Molybdate
Potential basicity: 319 lb. Calcium carbonate equivalent per ton.
ATTENTION: The application of fertilizer material containing Molybdenum (Mo) may result in forage crops containing levels of Molybdenum (Mo) which are toxic to ruminant animals.
Elemental Concentraion
| 100 ppm N Solution Contains the Following Elemental ppm | |
|---|---|
| Nitrate - N (NO3) | 80.8 |
| Ammonium - N (NH4) | 3.9 |
| Urea - N (Urea) | 15.3 |
| Phosphorus (P) | 0.0 |
| Potassium (K) | 83.0 |
| Calcium (Ca) | 73.3 |
| Magnesium (Mg) | 0.0 |
| Boron (B) | 0.045 |
| Copper (Cu) | 0.024 |
| Iron (Fe) | 0.333 |
| Manganese (Mn) | 0.167 |
| Molybdenum (Mo) | 0.006 |
| Zinc (Zn) | 0.017 |
Mixing Instructions
Chart displays the amount of dry fertilizer (oz.) to add to each gallon of water to make a concentrated solution. Please check your injector setting before use.
Mixing Table
| Desired N Feed Rate | 1:15 | 1:100 | 1:200 | E.C. Value |
|---|---|---|---|---|
| 50 ppm | 0.68 | 4.50 | 9.00 | 0.37 |
| 100 ppm | 1.35 | 9.00 | 18.00 | 0.74 |
| 200 ppm | 2.70 | 18.00 | 36.00 | 1.48 |
Limit of Solubility = 7 lbs per gallon
Important Notes:
E.C. value is the best method to determine fertilizer strength. Fertilizer appearance may vary in color due to variation in raw material size and tracer dye distribution upon the particles in the bag. In solution, color will remain consistent.
For best results, use warm water to dissolve product. Jack's fertilizers are made with 100% soluble raw materials that will form a true solution. Some raw materials are slower to dissolve than others. Keep stock tank covered to reduce light and debris inputs.
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