What does Sulfur (S) do?

In the soil, sulfur interacts with plant roots in two ways. First, sulfur, when converted by bacteria to sulfuric acid, lowers soil pH, increasing plant-root access to many nutrients. Second, sulfur plays a critical role in the formation of plant tissue proteins and vitamin formation.

After the industrial revolution, sulfur deposition from air polution meant that soil deficiency of this nutrient is relatively uncommon. Since the Clean Air Act, sulfer deficiency has become more of an issue to look out for.

Click here to learn about different types of sulfur ammendments and their impact on your soil.