To develop the students understanding of macronutrients, other than C,H, and O in which soil humus provides a significant quantity for plant growth. To develop the students understanding of sulfur oxidation reactions and the organisms that catalyze, the reaction. Discuss the additions and losses of sulfur. Discuss how one can better manage sulfur. K.A. Barbarick, pg.
Sulfur is part of certain amino acids.
Primarily as SO4 with small amounts of SO2 gas absorbed through stomates in plant leaves. Most soils in the U.S. contain adequate amounts of sulfur for plant growth. Vegetables and legumes have the highest sulfur needs. Grasses have the lowest sulfur needs.