The Dual Nutrient Advantage

Onions get their characteristic flavor from the uptake of sulfur from the soil. Potassium is a vital nutrient as well during the growing season. Protassium+® meets both nutrient needs with 17% sulfate sulfur and 50% potassium.

High K

The Importance of Potassium

Potassium supports the overall health of the plant, aids in drought resistance, and increases yield and produce shelf life. Potassium levels also affect bulb firmness and size. Protassium+ provides 50% K2O and has an extremely low chloride content. Its high potassium level benefits the functions and quality of onions in a variety of ways including:

  • Improving water use through regulation of photosynthesis and transpiration
  • Enhancing nitrogen use and increasing protein production
  • Boosting overall plant health and the ability to withstand disease, pest and drought stress

Readily Available

Why Sulfate Sulfur is Important

The sulfate sulfur in Protassium+ is available for immediate uptake and use by the plant. Other sulfur sources offer the nutrient in the elemental form, which takes considerable time, correct temperature and moisture to oxidize into a form that can be absorbed and used by the plant. With Protassium+, onions get the sulfur they need in a form that can be immediately used.

A 900 cwt per acre crop removes 150 lbs. of K2O from the soil.

A Threat to Quality

Avoiding Chloride Issues

Because onions are sensitive to chloride, it is important to use a potassium source that doesn't add to the chloride and salinity levels of the soil. Excess salts and chloride can build in the soil causing root damage and limiting key nutrient uptake. Protassium+ is virtually chloride-free and has  the lowest salt index of all the major potash fertilizers. Protassium+ won't create or contribute to a salinity or chloride problem.

Put your trust in the premium K source that brings more to the table for your onions and your bottom line: Protassium+.