Gypsum is a Reliable Source of Sulfur for Soybean Production

Soybeans (Glycine max) are a crucial global protein source, making their nutritional enhancement essential for agriculture and food production. Sulfur improves the quality of soybeans by increasing sulfur-containing amino acids, and the total content of sulfur in seeds may serve as a proxy for amino acid levels. However, optimizing sulfur availability through sustainable management remains underexplored.

A recent study in Agricultural & Environmental Letters investigated whether integrating cover crops and flue-gas desulfurization gypsum—a by-product of coal combustion—could enhance soybean nutrition.