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

Higher Yields are Available with K-Mag® Fertilizer

Why K-Mag?
The shortage of just one essential nutrient can shortchange apple orchard yields and quality. Growers can optimize yields and maximize profits by providing a balanced soil fertility program that ensures all 17 essential nutrients are available to plants.

K-Mag fertilizer provides three essential nutrients in the highly available sulfate form. Available in PREMIUM, GRANULAR and STANDARD grades, K-Mag provides 21-22% potassium (K2O), 10.5-11% magnesium (Mg) and 21-22% sulfur (S).

Also known as langbeinite, potassium magnesium sulfate, or double sulfate of potash, K-Mag is sourced from 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.

Increase apple yields
Tree nutrition is probably the most important factor in a successful orchard operation. A recent 3-year study on improved apple cultivars in the Pacific Northwest showed a favorable response to the K and Mg in K-Mag. The 3-in-1 nutrient was shown to:

  • Improve leaf tissue K concentration
  • Increase soil K levels
  • Maintain leaf Mg levels
  • Increase soil Mg levels
  • Increase apple fruit size
  • Decrease incidence of disease

Potassium (K)
Apples demand high levels of K. Often called the "quality nutrient," K puts the crisp in juicy apples by controlling water retention. K also contributes to fruit color, winter hardiness, tree growth and disease resistance.

Magnesium (Mg)
High K inputs can inhibit magnesium (Mg) uptake, and Mg deficiency is becoming more evident in many orchards. Without Mg, plants can't photosynthesize, and important carbohydrates and proteins aren't produced. Mg deficiencies can cause small fruit and premature fruit drop. K-Mag helps supply K and Mg in the correct balance.

Sulfur (S)
S encourages initial root development, increases fruit production, promotes stronger, more robust plants, and helps protect against mildews. The S provided by K-Mag does not lower pH, unlike other S sources.

K-Mag increases available nutrients to Fuji and Spartan Cultivars
  Fuji
Leaf K
Spartan
Leaf K
Fuji
Leaf Mg
Spartan
Leaf Mg
Fuji
Soil K
Spartan
Soil K
Fuji
Soil Mg
Spartan
Soil Mg
Control 1.44 1.30 0.29 0.36 0.31 0.36 0.39 0.37
107 K from K-Mag 1.56 1.46 0.29 0.35 0.43 0.46 0.51 0.52
214 K from K-Mag 1.61 1.53 0.29 0.36 0.61 0.52 0.73 0.63
Result Increased Increased Maintained Maintained Increased Increased Increased Increased
Data collected by orchard field personnel; samples analyzed by the AgriFood Canada Research Station.

Ensure your apple crop has all the nutrients it needs to thrive. Contact us today to learn about
adding K-Mag to your balanced soil fertility program!

Nutrient Deficiencies in Apples

Crop Nutrient Utilization
Apples --------------------------------LB/A --------------------------------
Yield (Per Acre) N P2O5 K2O Mg S
250 CWT 20 8 50 2 -
Leaves 80 38 130 22 -
Total 100 46 180 24 30*

* Estimated S for harvested and vegetative portion of crop.

 

 
 
  Crop Specific Information
  Nutrient Management
  Soil Sampling Information
  Resources
  Agri-Brief PDF
  Deficiency Symptoms
  Crop Nutrient Utilization
The Mosaic Company Site Map | Disclamer | Privacy Policy