K-Mag - The Premium Fertilizer
Mosaic | Retailer Tools | Media | Home
Why Use K- Mag?
 

High Performance Fertilizer

A Balanced Soil Fertility Program Begins With...Just as top athletes require special diets to refuel after rigorous training and excel in competition, high-yielding crops need ample nutrition to thrive and reach their maximum potential.

Crop success often is measured in yield, but quality factors like grain fill, color, weight, firmness, size and general appearance are subjective traits that can exponentially increase the value and profitability of any given crop.

Increasing crop quality and overall performance requires a complete and balanced soil fertility program that supplies not only needed N, P and K, but the "secondary" nutrients, like sulfur (S) and magnesium (Mg), and micronutrients. K-Mag fertilizer conveniently provides Mg and S, along with K, in each value-packed granule.

Quality, naturally
K-Mag is nature's unique and perfectly balanced source of K, Mg and S. Also known as langbeinite, potassium magnesium sulfate, or double sulfate of potash, K-Mag is sourced from natural ore beds deep beneath the earth's surface, where an isolated lake of ocean water once existed. Langbeinite, an evaporite mineral, is one of the most soluble salts in the ocean.

Feed the bottom line with available K, Mg and S
K-Mag fuels quality and yield by supplying a unique and perfectly balanced package of three essential nutrients — K, Mg and S — in the highly available water-soluble sulfate form:

21-22% POTASH (K2O) (18.2% POTASSIUM: K) — K is known as the "quality" nutrient. A good source of K, K-Mag promotes healthy root systems, increases plant vigor and resistance to disease and cold. K is also essential in sugar and starch formation, and the movement of nutrients through plants.

10.5-11% MAGNESIUM (Mg) (18% MAGNESIA MgO) — Mg is the central component of chlorophyll, the pigment molecule responsible for absorbing sunlight during photosynthesis. Providing Mg and K in the proper balance, K-Mag helps increase plant strength and builds resistance to winter kill, drying, insect attack and spray damage.

21-22% SULFUR (S) (67% SULFATE: SO4) — S helps build proteins in plants and is a key component of many unique traits. S puts the "green and leafy" into crops like spinach, while giving garlic and asparagus their distinctive flavors and improves the baking quality of wheat. S deficiencies are of particular concern as sulfur dioxide emission- reduction programs cause less S to be returned to the soil via the atmosphere. K-Mag provides an adequate supply of S for healthy crop production. Because it's in the sulfate form, it aids initial root growth — important in rapidly growing crops — and promotes seed production and vigorous plant growth.

High performance with K-Mag
Potassium, magnesium and sulfur are continually removed from the soil by high-yielding crops and, in the case of S and Mg, often are not replaced by many of today's high analysis fertilizers.

Severe to moderate deficiencies of K, Mg and S are present in nearly every major crop-producing area. Heavy cropping practices, erosion and leaching all contribute to shortages.

K-Mag provides three essential nutrients in the proper balance, helping to ensure that nutrition is not a limiting factor in achieving top performance.

K-Mag Grades
Grade % K2O % Mg % S SGN UI
PREMIUM 21.5 10.5 21 260 50
GRANULAR 22.0 10.8
22 250 33*
STANDARD 22.0 10.8 22 85 15
K-Mag contains less than 2.5% chloride (Cl) maximum, and 0.14% water (H 0). The pH is neutral 2 (7.0). *UI is 33 for GRANULAR while K-Mag PREMIUM is higher, making it ideal for blends.
 

Checking Soil Fertility Levels in the Fall...Five more reasons to use K-Mag

#1 Resists leaching
Unlike many other magnesium sources, K-Mag is 100 percent water soluble. The solubility rate depends on its soluble chemical nature and its particle size. Refined and ground into various screen sizes, K-Mag goes to work immediately upon application provided there is enough soil moisture to support crop growth. Yet, K-Mag GRANULAR dissolves slowly, resisting rapid leaching from the soil.

#2 Essentially chloride-free
K-Mag's maximum chloride content is less than 2.5 percent, minimizing the potential for fertilizer "burn." Thus, it is widely used on sensitive vegetable and fruit crops requiring high fertilizer rates, and on other crops that have a high K and Mg demand and do not tolerate chloride well.

#3 Provides balance of nutrients
The deficiency of any essential nutrient limits crop yields and crop quality — even when all other nutrients are present in adequate amounts. K-Mag supplies K, Mg and S in a balanced proportion that fits the nutrient needs of many crops.

#4 Does not change soil pH
Regardless of application rate, K-Mag does not change soil pH because it is a neutral salt. Producers can apply with confidence.

#5 Increases profit per acre
Crop producers throughout the world have reported extra profit per acre with K-Mag, especially on Mg- and S-deficient soils. Exact dollar benefits from K-Mag applications depend on crop and cropping methods, soil type, degree of soil nutrient deficiencies, previous cropping methods, and climatic conditions during the cropping year.

K-Mag can be used as part of a complete fertilizer for the crop, or applied directly to the soil. Check with your K-Mag dealer as to the best rates and application methods for your area.

 
 
  Resources
  General Brochure
  Questions and Answers
  K-Mag Video
  In The News
The Mosaic Company Site Map | Disclamer | Privacy Policy