Sulphur in the soil - Soil Essentials: Managing Your Farm's Primary Asset - page 56

What happens if adequate sulphur is not applied?
If a paddock has had a recent history of single super applications, it is unlikely
sulphur deficiencies will occur for a number of years, unless the soil is very sandy.
If sulphur levels are low then plant growth will be poor, with slow-growing, pale,
spindly plants. Animals grazing sulphur deficient pastures will in turn have poor
growth unless supplements are used. Crops will have low protein levels and
legumes will not fix good quantities of nitrogen.