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Home/Commercial Growing/Water-Soluble/21-6-20 All Purpose Formula

21-6-20 All Purpose Formula

21-6-20 All Purpose FormulaMasterblend water-soluble fertilizer
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.

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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 Nitrogen1:15 Injector Ratios1:100 Injector Ratios1:200 Injector RatiosEC (mS/cm)
500.483.226.440.28
1000.956.4412.90.56
1501.459.6519.30.84
2001.9312.925.71.12
2502.4116.132.21.4
3002.919.338.61.68
3503.3822.5451.96
4003.8625.751.52.24

21-6-20 All-Purpose Ratios by Crop Type

Crop TypeConstant Feed Ppm – NPeriodic Feed Ppm – N
Bedding Plants100-200200-250
Containerized Woody Ornamentals75-125200-350
Cut Flowers175-225300-450
Potted Chrysanthemums250-350350-400
Potted Tropical Foliage125-250250-300
Potted Geraniums250-300350-400
Potted Poinsettias200-350375-400
Vegetable Seedlings25-7575-150

Downloads

Injection Ratios

Commercial Growing Products

WATER-SOLUBLE FERTILIZERS
CONTROL-RELEASE FERTILIZERS

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  • Home
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  • Products
    • Commercial Growing
      • Overview
      • Water-Soluble Fertilizers
      • Control-Release Fertilizers
    • Turf Care & Maintenance
      • Overview
      • Water-Soluble Fertilizers
      • Granular Fertilizers
      • Herbicides, Fungicides, & Insecticides
      • Bulk Nutrients
    • Home Growing
      • Overview
      • Tomato & Vegetable Formula
      • Flowering Plants Formula
  • Applications
    • Commercial Growing Applications
      • Overview
      • Greenhouse Stock
      • Nursery Stock
      • Hydroponics
      • Vegetables & Produce
      • Foliage Plants
    • Turf Care Applications
      • Overview
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      • Sports Fields
    • Home Growing Applications
      • Overview
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  • Small Grower Spotlight
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