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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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