The South Korea Magnesium Sulphate Market Size is anticipated to reach USD 66.356 Million by 2035, growing at a CAGR of 4.18 % from 2025 to 2035. The market for magnesium sulphate in South Korea is expanding significantly, mostly as such of rising demand for horticultural and agricultural uses. The growing need for fertilizers that enhance soil fertility is driving the consumption of magnesium sulfate, which is known to boost crop yields.