Sulfur functions as a component of amino acids and increases yields and stand density in alfalfa. Deficiencies have become more common with increased alfalfa yields, less atmospheric deposition of sulfur, and lower sulfur levels in high-analysis fertilizers. The sulfur in sulfate form as found in Intrepid Trio is the only form of sulfur readily available to plants.
Magnesium serves as a central component of the chlorophyll molecule, aiding the plant in photosynthesis. Cations such as calcium and potassium compete with magnesium for plant uptake, therefore applying a balanced fertilizer like Intrepid Trio is a key for promoting balanced fertility.