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Apply 1.5–2.0 oz. per 1,000 sq. ft. every 14–21 days

During summer and fall, spray more frequently to improve stress tolerance and enhance synthesis of carbohydrates and proteins.

Package Sizes:

4 x 5 liter (5.28 US gallons) case

120 liter (31.7 US gallons) drum


High potassium concentration, low pH.

Potassium is utilized by turfgrass to support many critical physiological functions (translocation of sugars, enzyme activation, stomatal activity, etc.) It is required in relatively large quantities, but products containing a high percentage of soluble potassium are often very alkali. This high pH can cause problems with your tank mix, especially when combining them with products containing a high percentage of calcium or magnesium, hard water or pH sensitive agrochemicals.

Quelant-K low pH delivers a high concentration of readily available potassium in a formulation that is near pH neutral. Free amino acids incorporated into the formulation aid in prompt potassium uptake and utilization in the plant.

Product at a Glance: 

  • Near-neutral 7.2% pH level

  • A true high concentration foliar potassium supplement, enhanced with Macro-Sorb’s L-amino acid technology, designed to support critical plant functions. Learn more about Quelant technology.

  • Improves stress tolerance against heat, cold, traffic, disease or other adverse conditions

  • Compatible with Quelant-Ca and other products containing calcium and magnesium

  • Pharmaceutical grade manufacturing process guarantees consistent ratios of L-amino acids.  Learn more about the manufacturing process.

  • Maintains solubility even when applied with hard water. Learn more about the technology.

  • Immediate foliar absorption helps maintain proper potassium levels especially on sand-based greens

  • Low pH does not alter the efficiency of other chemical products in your tank mix

Efficient Uptake with Quelant-K

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Leaf Tissue Potassium 6 and 24 hours after treatment applications. Each product was calculated to deliver 1.2 lbs K2O per acre.

Quelant-K low pH Increases Potassium Concentration in Leaf Tissue

Research plots were set up at Colbert Hill Golf Course in Manhattan, Kansas on a tall fescue turfgrass stand. Macro-Sorb Quelant®-K low pH was applied at rates of 2.0 or 4.0 fl oz/1000 ft2 on 5 day intervals for a total of 3 applications. Five days after the final applications, leaf tissue samples were collected from each plot and sent to Kansas State University Soil and Plant Tissue Diagnostics Lab for potassium analysis.


Following applications of Quelant®-K low pH at 2.0 and 4.0 fl oz/1000 ft2 , leaf tissue potassium increased by 9 and 14 percent, respectively. With the addition of Macro-Sorb amino acids, foliar applications of Quelant®-K low pH efficiently increase potassium concentrations within leaf tissue. 

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