Major nutrient. Taken as sulfate anion.

The 7th most common element in plant by mass. Essential part of some amino acids, present also in some volatile organic compounds emitted by plants.

Sulfate defiencies in agricultural use of soils are again rising as sulfur emissions from industrial sources has greatly lessened.

(Which of course is a good thing considering that sulfur oxides released from burning becomes sulfuric acid in air we breathe and in soil too and acidification by sulfuric acid fallout is bad and with less acidic fallout the less liming is needed and so on.)