Description: Designed to supply Calcium (Ca), Magnesium (Mg), and Sulfur (S)—nutrients required by plants in lesser quantities than NPK, but essential for core structural development and enzyme activity.

Key Functions: Calcium builds strong cell walls; Magnesium forms the central core of chlorophyll molecules; Sulfur is vital for amino acid and protein synthesis.

Best Used For: Correcting specific structural or yellowing leaf issues, balancing soil pH, and supporting intensive cropping systems.