K-MAG Standard supplies three vital plant nutrients - potassium, magnesium and sulfur (22% K20, 11% Mg and 22% S). It is an excellent source of non-chloride potassium, water soluble magnesium and non-acidifying sulphur. K-MAG Standard is an economical source of these nutrients particularly in direct soil application situations such as perennial plantation crops (banana, citrus, coffee, palm oil, rubber, tea, etc.). Its maximum chloride content is less than 3.0 percent, minimizing the potential for fertilizer "burn." It is widely used on sensitive vegetables and fruit crops that require high fertilization rates, but do not tolerate high levels of chloride or soluble salts. K-MAG Standard has a typical SGN of 95 and is often used as a source of potassium, magnesium and sulfur in granulated formulas (NPK+Mg+S).

Agronomic Characteristics
Potassium is required for the uptake of nitrogen and synthesis of protein and starch. It also helps activate more than sixty enzymes, making them available to stimulate other chemical processes within the plant. Adequate potassium is essential for fruit formation, optimum yields and high quality. Magnesium activates a large number of enzymes in the plant and is also required for the synthesis of chlorophyll - the vital green pigment necessary for sugar manufacturing in plants. Sulfur activates a number of enzymes, is vital to the formation of amino acids, is crucial in the production of protein and is especially important to plants with high oil content.


K-MAG Standard Specifications: 0-0-22
 
CHEMICAL ANALYSIS
Component Symbol Typical Range (%) Typical (%) Guarantee (%)
Potassium Oxide K2O 22.0-22.4 22.1 22.0 min.
Potassium K 18.3
Calcium Ca 0.1
Sodium Na 0.7
Magnesium Mg 11.2-11.6 11.3 10.8 min.
Sulfur S 22.3-22.7 22.5 22.0 min.
Chloride Cl 0.8-1.6 1.2 2.5 max.
Water Insoluble - 0.3
Moisture (105°C) H2O 0.04-0.15 0.05
 
TYPICAL PROPERTIES
Physical Properties Typical
Bulk Density, loose lb/cu foot 91
kg/cu meter 1458
Angle of repose (degrees) 34
 
SCREEN ANALYSIS (SGN=90: UI=16)
Tyler Mesh U.S. Mesh Opening (mm.) Typical Range
(% cum.)
Typical
(% cum.)
10 12 1.680 0-6 3
14 16 1.190 20-35 30
20 20 0.841 45-80 55
28 30 0.600 70-80 75
35 40 0.420 80-90 85
48 50 0.300 90-95 92
65 70 0.210 93.100 95

Product analyses are typical as tested at mine site. Handling and transportation may affect the analysis of the delivered product.

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